Don't bother checking pointers before delete[] and FX_Free().

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1297713003 .

16 files changed, 64 insertions, 190 deletions

diff --git a/core/src/fpdfapi/fpdf_edit/fpdf_edit_create.cpp b/core/src/fpdfapi/fpdf_edit/fpdf_edit_create.cpp
index ff0539c61f..668c70b243 100644
--- a/core/src/fpdfapi/fpdf_edit/fpdf_edit_create.cpp
+++ b/core/src/fpdfapi/fpdf_edit/fpdf_edit_create.cpp
@@ -403,7 +403,7 @@ CPDF_FlateEncoder::~CPDF_FlateEncoder() {
   if (m_bCloned && m_pDict) {
     m_pDict->Release();
   }
-  if (m_bNewData && m_pData) {
+  if (m_bNewData) {
     FX_Free(m_pData);
   }
 }
@@ -2054,9 +2054,7 @@ void CPDF_Creator::InitID(FX_BOOL bDefault) {
       CFX_ByteStringC bsBuffer((const uint8_t*)pBuffer, 4 * sizeof(FX_DWORD));
       m_pIDArray->Add(CPDF_String::Create(bsBuffer, TRUE), m_pDocument);
     }
-    if (pBuffer) {
-      FX_Free(pBuffer);
-    }
+    FX_Free(pBuffer);
   }
   if (!bDefault) {
     return;
diff --git a/core/src/fpdfapi/fpdf_edit/fpdf_edit_image.cpp b/core/src/fpdfapi/fpdf_edit/fpdf_edit_image.cpp
index 9ea94bdd00..488d8393c7 100644
--- a/core/src/fpdfapi/fpdf_edit/fpdf_edit_image.cpp
+++ b/core/src/fpdfapi/fpdf_edit/fpdf_edit_image.cpp
@@ -278,10 +278,8 @@ void CPDF_Image::SetImage(const CFX_DIBitmap* pBitmap,
           pDict->Release();
           pDict = NULL;
         }
-        if (dest_buf) {
-          FX_Free(dest_buf);
-          dest_buf = NULL;
-        }
+        FX_Free(dest_buf);
+        dest_buf = NULL;
         dest_size = 0;
         delete pNewBitmap;
         return;
@@ -380,9 +378,7 @@ void CPDF_Image::SetImage(const CFX_DIBitmap* pBitmap,
   m_bIsMask = pBitmap->IsAlphaMask();
   m_Width = BitmapWidth;
   m_Height = BitmapHeight;
-  if (dest_buf) {
-    FX_Free(dest_buf);
-  }
+  FX_Free(dest_buf);
 }
 void CPDF_Image::ResetCache(CPDF_Page* pPage, const CFX_DIBitmap* pBitmap) {
   pPage->GetRenderCache()->ResetBitmap(m_pStream, pBitmap);
diff --git a/core/src/fpdfapi/fpdf_font/fpdf_font.cpp b/core/src/fpdfapi/fpdf_font/fpdf_font.cpp
index 0107000dd9..8eae7cf3f8 100644
--- a/core/src/fpdfapi/fpdf_font/fpdf_font.cpp
+++ b/core/src/fpdfapi/fpdf_font/fpdf_font.cpp
@@ -30,9 +30,7 @@ CPDF_FontGlobals::CPDF_FontGlobals() : m_pContrastRamps(NULL) {
 }
 CPDF_FontGlobals::~CPDF_FontGlobals() {
   ClearAll();
-  if (m_pContrastRamps) {
-    FX_Free(m_pContrastRamps);
-  }
+  FX_Free(m_pContrastRamps);
 }
 class CFX_StockFontArray {
  public:
diff --git a/core/src/fpdfapi/fpdf_font/fpdf_font_cid.cpp b/core/src/fpdfapi/fpdf_font/fpdf_font_cid.cpp
index 3c8b2567fe..6c728242e6 100644
--- a/core/src/fpdfapi/fpdf_font/fpdf_font_cid.cpp
+++ b/core/src/fpdfapi/fpdf_font/fpdf_font_cid.cpp
@@ -301,15 +301,9 @@ CPDF_CMap::CPDF_CMap() {
   m_nCodeRanges = 0;
 }
 CPDF_CMap::~CPDF_CMap() {
-  if (m_pMapping) {
-    FX_Free(m_pMapping);
-  }
-  if (m_pAddMapping) {
-    FX_Free(m_pAddMapping);
-  }
-  if (m_pLeadingBytes) {
-    FX_Free(m_pLeadingBytes);
-  }
+  FX_Free(m_pMapping);
+  FX_Free(m_pAddMapping);
+  FX_Free(m_pLeadingBytes);
   delete m_pUseMap;
 }
 void CPDF_CMap::Release() {
diff --git a/core/src/fpdfapi/fpdf_font/ttgsubtable.h b/core/src/fpdfapi/fpdf_font/ttgsubtable.h
index 78de3f0a28..395544ddbf 100644
--- a/core/src/fpdfapi/fpdf_font/ttgsubtable.h
+++ b/core/src/fpdfapi/fpdf_font/ttgsubtable.h
@@ -49,11 +49,7 @@ class CFX_CTTGSUBTable {
           ReqFeatureIndex(0),
           FeatureCount(0),
           FeatureIndex(NULL) {}
-    ~TLangSys() {
-      if (FeatureIndex) {
-        delete[] FeatureIndex;
-      }
-    }
+    ~TLangSys() { delete[] FeatureIndex; }
 
    private:
     TLangSys(const TLangSys&);
@@ -73,11 +69,7 @@ class CFX_CTTGSUBTable {
     TT_uint16_t LangSysCount;
     struct TLangSysRecord* LangSysRecord;
     TScript() : DefaultLangSys(0), LangSysCount(0), LangSysRecord(NULL) {}
-    ~TScript() {
-      if (LangSysRecord) {
-        delete[] LangSysRecord;
-      }
-    }
+    ~TScript() { delete[] LangSysRecord; }
 
    private:
     TScript(const TScript&);
@@ -96,11 +88,7 @@ class CFX_CTTGSUBTable {
     TT_uint16_t ScriptCount;
     struct TScriptRecord* ScriptRecord;
     TScriptList() : ScriptCount(0), ScriptRecord(NULL) {}
-    ~TScriptList() {
-      if (ScriptRecord) {
-        delete[] ScriptRecord;
-      }
-    }
+    ~TScriptList() { delete[] ScriptRecord; }
 
    private:
     TScriptList(const TScriptList&);
@@ -111,11 +99,7 @@ class CFX_CTTGSUBTable {
     int LookupCount;
     TT_uint16_t* LookupListIndex;
     TFeature() : FeatureParams(0), LookupCount(0), LookupListIndex(NULL) {}
-    ~TFeature() {
-      if (LookupListIndex) {
-        delete[] LookupListIndex;
-      }
-    }
+    ~TFeature() { delete[] LookupListIndex; }
 
    private:
     TFeature(const TFeature&);
@@ -134,11 +118,7 @@ class CFX_CTTGSUBTable {
     int FeatureCount;
     struct TFeatureRecord* FeatureRecord;
     TFeatureList() : FeatureCount(0), FeatureRecord(NULL) {}
-    ~TFeatureList() {
-      if (FeatureRecord) {
-        delete[] FeatureRecord;
-      }
-    }
+    ~TFeatureList() { delete[] FeatureRecord; }
 
    private:
     TFeatureList(const TFeatureList&);
@@ -166,11 +146,7 @@ class CFX_CTTGSUBTable {
     TT_uint16_t GlyphCount;
     TT_uint16_t* GlyphArray;
     TCoverageFormat1() : GlyphCount(0), GlyphArray(NULL) { CoverageFormat = 1; }
-    ~TCoverageFormat1() override {
-      if (GlyphArray) {
-        delete[] GlyphArray;
-      }
-    }
+    ~TCoverageFormat1() override { delete[] GlyphArray; }
 
    private:
     TCoverageFormat1(const TCoverageFormat1&);
@@ -194,11 +170,7 @@ class CFX_CTTGSUBTable {
     TCoverageFormat2() : RangeCount(0), RangeRecord(NULL) {
       CoverageFormat = 2;
     }
-    ~TCoverageFormat2() override {
-      if (RangeRecord) {
-        delete[] RangeRecord;
-      }
-    }
+    ~TCoverageFormat2() override { delete[] RangeRecord; }
 
    private:
     TCoverageFormat2(const TCoverageFormat2&);
@@ -220,11 +192,7 @@ class CFX_CTTGSUBTable {
     TClassDefFormat1() : StartGlyph(0), GlyphCount(0), ClassValueArray(NULL) {
       ClassFormat = 1;
     }
-    ~TClassDefFormat1() override {
-      if (ClassValueArray) {
-        delete[] ClassValueArray;
-      }
-    }
+    ~TClassDefFormat1() override { delete[] ClassValueArray; }
 
    private:
     TClassDefFormat1(const TClassDefFormat1&);
@@ -246,11 +214,7 @@ class CFX_CTTGSUBTable {
     TClassDefFormat2() : ClassRangeCount(0), ClassRangeRecord(NULL) {
       ClassFormat = 2;
     }
-    ~TClassDefFormat2() override {
-      if (ClassRangeRecord) {
-        delete[] ClassRangeRecord;
-      }
-    }
+    ~TClassDefFormat2() override { delete[] ClassRangeRecord; }
 
    private:
     TClassDefFormat2(const TClassDefFormat2&);
@@ -325,11 +289,7 @@ class CFX_CTTGSUBTable {
     int LookupCount;
     struct TLookup* Lookup;
     TLookupList() : LookupCount(0), Lookup(NULL) {}
-    ~TLookupList() {
-      if (Lookup) {
-        delete[] Lookup;
-      }
-    }
+    ~TLookupList() { delete[] Lookup; }
 
    private:
     TLookupList(const TLookupList&);
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page.cpp
index 0421aba2d5..f6f03336a0 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page.cpp
@@ -95,12 +95,10 @@ CPDF_TextObject::CPDF_TextObject()
 }
 
 CPDF_TextObject::~CPDF_TextObject() {
-  if (m_nChars > 1 && m_pCharCodes) {
+  if (m_nChars > 1) {
     FX_Free(m_pCharCodes);
   }
-  if (m_pCharPos) {
-    FX_Free(m_pCharPos);
-  }
+  FX_Free(m_pCharPos);
 }
 
 void CPDF_TextObject::GetItemInfo(int index, CPDF_TextObjectItem* pInfo) const {
@@ -186,14 +184,12 @@ void CPDF_TextObject::GetCharInfo(int index, CPDF_TextObjectItem* pInfo) const {
 
 void CPDF_TextObject::CopyData(const CPDF_PageObject* pSrc) {
   const CPDF_TextObject* pSrcObj = (const CPDF_TextObject*)pSrc;
-  if (m_nChars > 1 && m_pCharCodes) {
+  if (m_nChars > 1) {
     FX_Free(m_pCharCodes);
     m_pCharCodes = nullptr;
   }
-  if (m_pCharPos) {
-    FX_Free(m_pCharPos);
-    m_pCharPos = nullptr;
-  }
+  FX_Free(m_pCharPos);
+  m_pCharPos = nullptr;
   m_nChars = pSrcObj->m_nChars;
   if (m_nChars > 1) {
     m_pCharCodes = FX_Alloc(FX_DWORD, m_nChars);
@@ -220,14 +216,12 @@ void CPDF_TextObject::GetTextMatrix(CFX_AffineMatrix* pMatrix) const {
 void CPDF_TextObject::SetSegments(const CFX_ByteString* pStrs,
                                   FX_FLOAT* pKerning,
                                   int nsegs) {
-  if (m_nChars > 1 && m_pCharCodes) {
+  if (m_nChars > 1) {
     FX_Free(m_pCharCodes);
     m_pCharCodes = nullptr;
   }
-  if (m_pCharPos) {
-    FX_Free(m_pCharPos);
-    m_pCharPos = nullptr;
-  }
+  FX_Free(m_pCharPos);
+  m_pCharPos = nullptr;
   CPDF_Font* pFont = m_TextState.GetFont();
   m_nChars = 0;
   for (int i = 0; i < nsegs; ++i) {
@@ -262,10 +256,10 @@ void CPDF_TextObject::SetText(const CFX_ByteString& str) {
 }
 
 void CPDF_TextObject::SetEmpty() {
-  if (m_nChars > 1 && m_pCharCodes) {
+  if (m_nChars > 1) {
     FX_Free(m_pCharCodes);
   }
-  if (m_nChars > 1 && m_pCharPos) {
+  if (m_nChars > 1) {
     FX_Free(m_pCharPos);
   }
   m_nChars = 0;
@@ -285,14 +279,12 @@ void CPDF_TextObject::SetText(CFX_ByteString* pStrs,
 void CPDF_TextObject::SetText(int nChars,
                               FX_DWORD* pCharCodes,
                               FX_FLOAT* pKernings) {
-  if (m_nChars > 1 && m_pCharCodes) {
+  if (m_nChars > 1) {
     FX_Free(m_pCharCodes);
     m_pCharCodes = nullptr;
   }
-  if (m_pCharPos) {
-    FX_Free(m_pCharPos);
-    m_pCharPos = nullptr;
-  }
+  FX_Free(m_pCharPos);
+  m_pCharPos = nullptr;
   int nKernings = 0;
   int i;
   for (i = 0; i < nChars - 1; ++i) {
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_colors.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_colors.cpp
index cc6c9e9d56..a3fef3df82 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_colors.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_colors.cpp
@@ -671,12 +671,8 @@ class CPDF_ICCBasedCS : public CPDF_ColorSpace {
 };
 
 CPDF_ICCBasedCS::~CPDF_ICCBasedCS() {
-  if (m_pCache) {
-    FX_Free(m_pCache);
-  }
-  if (m_pRanges) {
-    FX_Free(m_pRanges);
-  }
+  FX_Free(m_pCache);
+  FX_Free(m_pRanges);
   if (m_pAlterCS && m_bOwn) {
     m_pAlterCS->ReleaseCS();
   }
@@ -882,9 +878,7 @@ class CPDF_IndexedCS : public CPDF_ColorSpace {
   FX_FLOAT* m_pCompMinMax;
 };
 CPDF_IndexedCS::~CPDF_IndexedCS() {
-  if (m_pCompMinMax) {
-    FX_Free(m_pCompMinMax);
-  }
+  FX_Free(m_pCompMinMax);
   CPDF_ColorSpace* pCS = m_pCountedBaseCS ? m_pCountedBaseCS->get() : NULL;
   if (pCS && m_pDocument) {
     m_pDocument->GetPageData()->ReleaseColorSpace(pCS->GetArray());
@@ -1460,9 +1454,7 @@ void CPDF_Color::SetValue(CPDF_Pattern* pPattern, FX_FLOAT* comps, int ncomps) {
     return;
   }
   if (m_pCS == NULL || m_pCS->GetFamily() != PDFCS_PATTERN) {
-    if (m_pBuffer) {
-      FX_Free(m_pBuffer);
-    }
+    FX_Free(m_pBuffer);
     m_pCS = CPDF_ColorSpace::GetStockCS(PDFCS_PATTERN);
     m_pBuffer = m_pCS->CreateBuf();
   }
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_func.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_func.cpp
index 1ee062ee7c..8c909a9e68 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_func.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_func.cpp
@@ -487,12 +487,8 @@ CPDF_SampledFunc::CPDF_SampledFunc() {
 }
 CPDF_SampledFunc::~CPDF_SampledFunc() {
   delete m_pSampleStream;
-  if (m_pEncodeInfo) {
-    FX_Free(m_pEncodeInfo);
-  }
-  if (m_pDecodeInfo) {
-    FX_Free(m_pDecodeInfo);
-  }
+  FX_Free(m_pEncodeInfo);
+  FX_Free(m_pDecodeInfo);
 }
 FX_BOOL CPDF_SampledFunc::v_Init(CPDF_Object* pObj) {
   if (pObj->GetType() != PDFOBJ_STREAM) {
@@ -678,12 +674,8 @@ CPDF_ExpIntFunc::CPDF_ExpIntFunc() {
   m_pEndValues = NULL;
 }
 CPDF_ExpIntFunc::~CPDF_ExpIntFunc() {
-  if (m_pBeginValues) {
     FX_Free(m_pBeginValues);
-  }
-  if (m_pEndValues) {
     FX_Free(m_pEndValues);
-  }
 }
 FX_BOOL CPDF_ExpIntFunc::v_Init(CPDF_Object* pObj) {
   CPDF_Dictionary* pDict = pObj->GetDict();
@@ -747,15 +739,9 @@ CPDF_StitchFunc::CPDF_StitchFunc() {
 CPDF_StitchFunc::~CPDF_StitchFunc() {
   for (int i = 0; i < m_nSubs; i++)
     delete m_pSubFunctions[i];
-  if (m_pSubFunctions) {
-    FX_Free(m_pSubFunctions);
-  }
-  if (m_pBounds) {
-    FX_Free(m_pBounds);
-  }
-  if (m_pEncode) {
-    FX_Free(m_pEncode);
-  }
+  FX_Free(m_pSubFunctions);
+  FX_Free(m_pBounds);
+  FX_Free(m_pEncode);
 }
 FX_BOOL CPDF_StitchFunc::v_Init(CPDF_Object* pObj) {
   CPDF_Dictionary* pDict = pObj->GetDict();
@@ -859,14 +845,8 @@ CPDF_Function::CPDF_Function() {
   m_pRanges = NULL;
 }
 CPDF_Function::~CPDF_Function() {
-  if (m_pDomains) {
-    FX_Free(m_pDomains);
-    m_pDomains = NULL;
-  }
-  if (m_pRanges) {
-    FX_Free(m_pRanges);
-    m_pRanges = NULL;
-  }
+  FX_Free(m_pDomains);
+  FX_Free(m_pRanges);
 }
 FX_BOOL CPDF_Function::Init(CPDF_Object* pObj) {
   CPDF_Dictionary* pDict;
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_graph_state.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_graph_state.cpp
index e010a28b02..f11a2bb8d1 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_graph_state.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_graph_state.cpp
@@ -31,14 +31,10 @@ CPDF_ClipPathData::CPDF_ClipPathData() {
 CPDF_ClipPathData::~CPDF_ClipPathData() {
   int i;
   delete[] m_pPathList;
-  if (m_pTypeList) {
-    FX_Free(m_pTypeList);
-  }
+  FX_Free(m_pTypeList);
   for (i = m_TextCount - 1; i > -1; i--)
     delete m_pTextList[i];
-  if (m_pTextList) {
-    FX_Free(m_pTextList);
-  }
+  FX_Free(m_pTextList);
 }
 CPDF_ClipPathData::CPDF_ClipPathData(const CPDF_ClipPathData& src) {
   m_pPathList = NULL;
@@ -148,9 +144,7 @@ void CPDF_ClipPath::AppendPath(CPDF_Path path, int type, FX_BOOL bAutoMerge) {
     delete[] pData->m_pPathList;
     uint8_t* pNewType = FX_Alloc(uint8_t, pData->m_PathCount + 8);
     FXSYS_memcpy(pNewType, pData->m_pTypeList, pData->m_PathCount);
-    if (pData->m_pTypeList) {
-      FX_Free(pData->m_pTypeList);
-    }
+    FX_Free(pData->m_pTypeList);
     pData->m_pPathList = pNewPath;
     pData->m_pTypeList = pNewType;
   }
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp
index 47ba46a0f3..059dd4c2a6 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp
@@ -83,9 +83,7 @@ CPDF_StreamContentParser::~CPDF_StreamContentParser() {
   for (int i = 0; i < m_StateStack.GetSize(); ++i) {
     delete (CPDF_AllStates*)m_StateStack[i];
   }
-  if (m_pPathPoints) {
-    FX_Free(m_pPathPoints);
-  }
+  FX_Free(m_pPathPoints);
   if (m_pLastImageDict) {
     m_pLastImageDict->Release();
   }
@@ -1087,9 +1085,7 @@ void CPDF_StreamContentParser::Handle_SetColorPS_Fill() {
   } else {
     m_pCurStates->m_ColorState.SetFillColor(NULL, values, nvalues);
   }
-  if (values) {
-    FX_Free(values);
-  }
+  FX_Free(values);
 }
 void CPDF_StreamContentParser::Handle_SetColorPS_Stroke() {
   if (m_Options.m_bTextOnly) {
@@ -1119,9 +1115,7 @@ void CPDF_StreamContentParser::Handle_SetColorPS_Stroke() {
   } else {
     m_pCurStates->m_ColorState.SetStrokeColor(NULL, values, nvalues);
   }
-  if (values) {
-    FX_Free(values);
-  }
+  FX_Free(values);
 }
 CFX_FloatRect _GetShadingBBox(CPDF_Stream* pStream,
                               int type,
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
index 78169614bd..48e9b98d3a 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
@@ -439,9 +439,7 @@ CPDF_Stream* CPDF_StreamParser::ReadInlineStream(CPDF_Document* pDoc,
         pDict->RemoveAt(FX_BSTRC("DecodeParms"));
       }
     } else {
-      if (pData) {
-        FX_Free(pData);
-      }
+      FX_Free(pData);
       FX_DWORD dwSavePos = m_Pos;
       m_Pos += dwStreamSize;
       while (1) {
@@ -960,9 +958,8 @@ void CPDF_ContentParser::Clear() {
       delete m_pStreamArray[i];
     FX_Free(m_pStreamArray);
   }
-  if (m_pData && m_pSingleStream == NULL) {
-    FX_Free((void*)m_pData);
-  }
+  if (!m_pSingleStream)
+    FX_Free(m_pData);
   m_pParser = NULL;
   m_pStreamArray = NULL;
   m_pSingleStream = NULL;
diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_encrypt.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_encrypt.cpp
index 55e648a054..125b7e0bf5 100644
--- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_encrypt.cpp
+++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_encrypt.cpp
@@ -1040,7 +1040,5 @@ CPDF_StandardCryptoHandler::CPDF_StandardCryptoHandler() {
   m_KeyLen = 0;
 }
 CPDF_StandardCryptoHandler::~CPDF_StandardCryptoHandler() {
-  if (m_pAESContext) {
-    FX_Free(m_pAESContext);
-  }
+  FX_Free(m_pAESContext);
 }
diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_objects.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_objects.cpp
index 3830ad68a3..9227536ec7 100644
--- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_objects.cpp
+++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_objects.cpp
@@ -828,7 +828,7 @@ CPDF_Stream::CPDF_Stream(uint8_t* pData, FX_DWORD size, CPDF_Dictionary* pDict)
   m_pCryptoHandler = NULL;
 }
 CPDF_Stream::~CPDF_Stream() {
-  if (m_GenNum == (FX_DWORD)-1 && m_pDataBuf != NULL) {
+  if (m_GenNum == (FX_DWORD)-1) {
     FX_Free(m_pDataBuf);
   }
   if (m_pDict) {
@@ -843,9 +843,7 @@ void CPDF_Stream::InitStream(CPDF_Dictionary* pDict) {
     m_pDict = pDict;
   }
   if (m_GenNum == (FX_DWORD)-1) {
-    if (m_pDataBuf) {
-      FX_Free(m_pDataBuf);
-    }
+    FX_Free(m_pDataBuf);
   }
   m_GenNum = 0;
   m_pFile = NULL;
@@ -871,9 +869,7 @@ void CPDF_Stream::SetData(const uint8_t* pData,
                           FX_BOOL bCompressed,
                           FX_BOOL bKeepBuf) {
   if (m_GenNum == (FX_DWORD)-1) {
-    if (m_pDataBuf) {
-      FX_Free(m_pDataBuf);
-    }
+    FX_Free(m_pDataBuf);
   } else {
     m_GenNum = (FX_DWORD)-1;
     m_pCryptoHandler = NULL;
@@ -1070,12 +1066,10 @@ void CPDF_StreamAcc::LoadAllData(const CPDF_Stream* pStream,
   m_bNewBuf = m_pData != pStream->m_pDataBuf;
 }
 CPDF_StreamAcc::~CPDF_StreamAcc() {
-  if (m_bNewBuf && m_pData) {
+  if (m_bNewBuf) {
     FX_Free(m_pData);
   }
-  if (m_pSrcData) {
-    FX_Free(m_pSrcData);
-  }
+  FX_Free(m_pSrcData);
 }
 const uint8_t* CPDF_StreamAcc::GetData() const {
   if (m_bNewBuf) {
diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
index 74eabe1396..a12a2894a5 100644
--- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
+++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
@@ -1732,9 +1732,7 @@ CPDF_SyntaxParser::CPDF_SyntaxParser() {
   m_bFileStream = FALSE;
 }
 CPDF_SyntaxParser::~CPDF_SyntaxParser() {
-  if (m_pFileBuf) {
-    FX_Free(m_pFileBuf);
-  }
+  FX_Free(m_pFileBuf);
 }
 FX_BOOL CPDF_SyntaxParser::GetCharAt(FX_FILESIZE pos, uint8_t& ch) {
   FX_FILESIZE save_pos = m_Pos;
@@ -2589,10 +2587,7 @@ CPDF_Stream* CPDF_SyntaxParser::ReadStream(CPDF_Dictionary* pDict,
 }
 void CPDF_SyntaxParser::InitParser(IFX_FileRead* pFileAccess,
                                    FX_DWORD HeaderOffset) {
-  if (m_pFileBuf) {
-    FX_Free(m_pFileBuf);
-    m_pFileBuf = NULL;
-  }
+  FX_Free(m_pFileBuf);
   m_pFileBuf = FX_Alloc(uint8_t, m_BufSize);
   m_HeaderOffset = HeaderOffset;
   m_FileLen = pFileAccess->GetSize();
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp
index e066957e62..8a614810df 100644
--- a/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp
@@ -182,17 +182,11 @@ CPDF_DIBSource::CPDF_DIBSource() {
 }
 CPDF_DIBSource::~CPDF_DIBSource() {
   delete m_pStreamAcc;
-  if (m_pMaskedLine) {
-    FX_Free(m_pMaskedLine);
-  }
-  if (m_pLineBuf) {
-    FX_Free(m_pLineBuf);
-  }
+  FX_Free(m_pMaskedLine);
+  FX_Free(m_pLineBuf);
   m_pCachedBitmap.reset();
   delete m_pDecoder;
-  if (m_pCompData) {
-    FX_Free(m_pCompData);
-  }
+  FX_Free(m_pCompData);
   CPDF_ColorSpace* pCS = m_pColorSpace;
   if (pCS && m_pDocument) {
     m_pDocument->GetPageData()->ReleaseColorSpace(pCS->GetArray());
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp
index 7d6921f544..d36125e1b8 100644
--- a/core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp
@@ -531,9 +531,7 @@ CPDF_CharPosList::CPDF_CharPosList() {
   m_pCharPos = NULL;
 }
 CPDF_CharPosList::~CPDF_CharPosList() {
-  if (m_pCharPos) {
-    FX_Free(m_pCharPos);
-  }
+  FX_Free(m_pCharPos);
 }
 void CPDF_CharPosList::Load(int nChars,
                             FX_DWORD* pCharCodes,