Merge to XFA: Cleanup: Do not check pointers before deleting them.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1192743004.

(cherry picked from commit cfac954abcab7caf47d3fa3d641c553cba998271)

Review URL: https://codereview.chromium.org/1196783003.

2 files changed, 12 insertions, 26 deletions

diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_filters.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_filters.cpp
index ac48dc6c65..efe085c2ee 100644
--- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_filters.cpp
+++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_filters.cpp
@@ -18,9 +18,7 @@ CFX_DataFilter::CFX_DataFilter()
 }
 CFX_DataFilter::~CFX_DataFilter()
 {
-    if (m_pDestFilter) {
-        delete m_pDestFilter;
-    }
+    delete m_pDestFilter;
 }
 void CFX_DataFilter::SetDestFilter(CFX_DataFilter* pFilter)
 {
@@ -192,12 +190,8 @@ CPDF_StreamFilter* CPDF_Stream::GetStreamFilter(FX_BOOL bRaw) const
 }
 CPDF_StreamFilter::~CPDF_StreamFilter()
 {
-    if (m_pFilter) {
-        delete m_pFilter;
-    }
-    if (m_pBuffer) {
-        delete m_pBuffer;
-    }
+    delete m_pFilter;
+    delete m_pBuffer;
 }
 #define FPDF_FILTER_BUFFER_IN_SIZE	FPDF_FILTER_BUFFER_SIZE
 FX_DWORD CPDF_StreamFilter::ReadBlock(uint8_t* buffer, FX_DWORD buf_size)
diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
index 9f5acb5257..5e673b0829 100644
--- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
+++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
@@ -72,7 +72,7 @@ void CPDF_Parser::SetEncryptDictionary(CPDF_Dictionary* pDict)
 void CPDF_Parser::CloseParser(FX_BOOL bReParse)
 {
     m_bVersionUpdated = FALSE;
-    if (m_pDocument && !bReParse) {
+    if (!bReParse) {
         delete m_pDocument;
         m_pDocument = NULL;
     }
@@ -313,11 +313,9 @@ FX_DWORD CPDF_Parser::SetEncryptHandler()
 }
 void CPDF_Parser::ReleaseEncryptHandler()
 {
-    if (m_Syntax.m_pCryptoHandler) {
-        delete m_Syntax.m_pCryptoHandler;
-        m_Syntax.m_pCryptoHandler = NULL;
-    }
-    if (m_pSecurityHandler && !m_bForceUseSecurityHandler) {
+    delete m_Syntax.m_pCryptoHandler;
+    m_Syntax.m_pCryptoHandler = NULL;
+    if (!m_bForceUseSecurityHandler) {
         delete m_pSecurityHandler;
         m_pSecurityHandler = NULL;
     }
@@ -1486,7 +1484,7 @@ FX_BOOL CPDF_Parser::IsOwner()
 void CPDF_Parser::SetSecurityHandler(CPDF_SecurityHandler* pSecurityHandler, FX_BOOL bForced)
 {
     ASSERT(m_pSecurityHandler == NULL);
-    if (m_pSecurityHandler && !m_bForceUseSecurityHandler) {
+    if (!m_bForceUseSecurityHandler) {
         delete m_pSecurityHandler;
         m_pSecurityHandler = NULL;
     }
@@ -2988,12 +2986,8 @@ CPDF_DataAvail::~CPDF_DataAvail()
     if (m_pTrailer) {
         m_pTrailer->Release();
     }
-    if (m_pageMapCheckState) {
-        delete m_pageMapCheckState;
-    }
-    if (m_pagesLoadState) {
-        delete m_pagesLoadState;
-    }
+    delete m_pageMapCheckState;
+    delete m_pagesLoadState;
     int32_t i = 0;
     int32_t iSize = m_arrayAcroforms.GetSize();
     for (i = 0; i < iSize; ++i) {
@@ -4644,10 +4638,8 @@ CPDF_PageNode::~CPDF_PageNode()
 {
     int32_t iSize = m_childNode.GetSize();
     for (int32_t i = 0; i < iSize; ++i) {
-        CPDF_PageNode *pNode = (CPDF_PageNode*)m_childNode[i];
-        if (pNode) {
-            delete pNode;
-        }
+        CPDF_PageNode* pNode = (CPDF_PageNode*)m_childNode[i];
+        delete pNode;
     }
     m_childNode.RemoveAll();
 }