Merge to XFA: Don't bother checking pointers before delete[] and FX_Free().

R=tsepez@chromium.org

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

(cherry picked from commit cb62e7657b3a9a04142028a4e6614029a08e894b)

Review URL: https://codereview.chromium.org/1287053005 .

3 files changed, 8 insertions, 21 deletions

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 d4deb1df3b..eed62013f5 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;
@@ -1101,12 +1097,10 @@ 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 e5d0b6a17b..e78ee4596d 100644
--- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
+++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
@@ -1735,9 +1735,7 @@ 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;
@@ -2598,10 +2596,7 @@ 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();