Get rid of most instance of 'foo != NULL'

core/src/fxcrt/fx_basic_buffer.cpp

 // 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
 
 #include "core/include/fxcrt/fx_basic.h"
 
 FX_STRSIZE FX_ftoa(FX_FLOAT f, FX_CHAR* buf);
 CFX_BinaryBuf::CFX_BinaryBuf()
@@ skipping 133 matching lines @@
   AppendBlock(buf.m_pBuffer, buf.m_DataSize);
   return *this;
 }
 void CFX_ByteTextBuf::operator=(const CFX_ByteStringC& str) {
   CopyData(str.GetPtr(), str.GetLength());
 }
 void CFX_WideTextBuf::AppendChar(FX_WCHAR ch) {
   if (m_AllocSize < m_DataSize + (FX_STRSIZE)sizeof(FX_WCHAR)) {
     ExpandBuf(sizeof(FX_WCHAR));
   }
-  ASSERT(m_pBuffer != NULL);
+  ASSERT(m_pBuffer);
   *(FX_WCHAR*)(m_pBuffer + m_DataSize) = ch;
   m_DataSize += sizeof(FX_WCHAR);
 }
 CFX_WideTextBuf& CFX_WideTextBuf::operator<<(const CFX_WideStringC& str) {
   AppendBlock(str.GetPtr(), str.GetLength() * sizeof(FX_WCHAR));
   return *this;
 }
 CFX_WideTextBuf& CFX_WideTextBuf::operator<<(const CFX_WideString& str) {
   AppendBlock(str.c_str(), str.GetLength() * sizeof(FX_WCHAR));
   return *this;
 }
 CFX_WideTextBuf& CFX_WideTextBuf::operator<<(int i) {
   char buf[32];
   FXSYS_itoa(i, buf, 10);
   FX_STRSIZE len = FXSYS_strlen(buf);
   if (m_AllocSize < m_DataSize + (FX_STRSIZE)(len * sizeof(FX_WCHAR))) {
     ExpandBuf(len * sizeof(FX_WCHAR));
   }
-  ASSERT(m_pBuffer != NULL);
+  ASSERT(m_pBuffer);
   FX_WCHAR* str = (FX_WCHAR*)(m_pBuffer + m_DataSize);
   for (FX_STRSIZE j = 0; j < len; j++) {
     *str++ = buf[j];
   }
   m_DataSize += len * sizeof(FX_WCHAR);
   return *this;
 }
 CFX_WideTextBuf& CFX_WideTextBuf::operator<<(double f) {
   char buf[32];
   FX_STRSIZE len = FX_ftoa((FX_FLOAT)f, buf);
   if (m_AllocSize < m_DataSize + (FX_STRSIZE)(len * sizeof(FX_WCHAR))) {
     ExpandBuf(len * sizeof(FX_WCHAR));
   }
-  ASSERT(m_pBuffer != NULL);
+  ASSERT(m_pBuffer);
   FX_WCHAR* str = (FX_WCHAR*)(m_pBuffer + m_DataSize);
   for (FX_STRSIZE i = 0; i < len; i++) {
     *str++ = buf[i];
   }
   m_DataSize += len * sizeof(FX_WCHAR);
   return *this;
 }
 CFX_WideTextBuf& CFX_WideTextBuf::operator<<(const FX_WCHAR* lpsz) {
   AppendBlock(lpsz, FXSYS_wcslen(lpsz) * sizeof(FX_WCHAR));
   return *this;
@@ skipping 126 matching lines @@
 }
 FX_BOOL CFX_FileBufferArchive::DoWork(const void* pBuf, size_t size) {
   if (!m_pFile) {
     return FALSE;
   }
   if (!pBuf || size < 1) {
     return TRUE;
   }
   return m_pFile->WriteBlock(pBuf, size);
 }