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

core/src/fxcrt/xml_int.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef CORE_SRC_FXCRT_XML_INT_H_
 #define CORE_SRC_FXCRT_XML_INT_H_
 
 #include "../../include/fxcrt/fx_stream.h"
@@ skipping 29 matching lines @@
   size_t m_dwCurPos;
 };
 
 #define FX_XMLDATASTREAM_BufferSize (32 * 1024)
 class CXML_DataStmAcc : public IFX_BufferRead {
  public:
   CXML_DataStmAcc(IFX_FileRead* pFileRead)
       : m_pFileRead(pFileRead), m_pBuffer(NULL), m_nStart(0), m_dwSize(0) {
     FXSYS_assert(m_pFileRead != NULL);
   }
-  ~CXML_DataStmAcc() override {
-    if (m_pBuffer) {
-      FX_Free(m_pBuffer);
-    }
-  }
+  ~CXML_DataStmAcc() override { FX_Free(m_pBuffer); }
 
   void Release() override { delete this; }
   FX_BOOL IsEOF() override {
     return m_nStart + (FX_FILESIZE)m_dwSize >= m_pFileRead->GetSize();
   }
   FX_FILESIZE GetPosition() override {
     return m_nStart + (FX_FILESIZE)m_dwSize;
   }
   size_t ReadBlock(void* buffer, size_t size) override { return 0; }
   FX_BOOL ReadNextBlock(FX_BOOL bRestart = FALSE) override {
@@ skipping 54 matching lines @@
                             const CFX_WideStringC& content,
                             CXML_Element* pElement);
   void InsertCDATASegment(CFX_UTF8Decoder& decoder, CXML_Element* pElement);
 };
 
 void FX_XML_SplitQualifiedName(const CFX_ByteStringC& bsFullName,
                                CFX_ByteStringC& bsSpace,
                                CFX_ByteStringC& bsName);
 
 #endif  // CORE_SRC_FXCRT_XML_INT_H_