Get rid of NULLs in xfa/

xfa/fde/cfde_txtedtbuf.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 "xfa/fde/cfde_txtedtbuf.h"
 
 #include "xfa/fgas/crt/fgas_memory.h"
 
 namespace {
 
 const int kDefaultChunkSize = 1024;
 const int kDefaultChunkCount = 2;
 
 }  // namespace
 
 CFDE_TxtEdtBuf::CFDE_TxtEdtBuf()
     : m_nChunkSize(kDefaultChunkSize),
       m_nTotal(0),
       m_bChanged(FALSE),
-      m_pAllocator(NULL) {
+      m_pAllocator(nullptr) {
   ASSERT(m_nChunkSize);
   ResetChunkBuffer(kDefaultChunkCount, m_nChunkSize);
 }
 
 CFDE_TxtEdtBuf::~CFDE_TxtEdtBuf() {
   Clear(TRUE);
   delete m_pAllocator;
   m_Chunks.RemoveAll();
 }
 
@@ skipping 156 matching lines @@
     nLength -= nDelete;
     cpEnd.nChunkIndex--;
   }
   while (nLength > 0) {
     lpChunk = m_Chunks[cpEnd.nChunkIndex];
     int32_t nDeleted = std::min(lpChunk->nUsed, nLength);
     lpChunk->nUsed -= nDeleted;
     if (lpChunk->nUsed == 0) {
       m_pAllocator->Free(lpChunk);
       m_Chunks.RemoveAt(cpEnd.nChunkIndex);
-      lpChunk = NULL;
+      lpChunk = nullptr;
     }
     nLength -= nDeleted;
     cpEnd.nChunkIndex--;
   }
   m_bChanged = TRUE;
 }
 
 void CFDE_TxtEdtBuf::Clear(FX_BOOL bRelease) {
   int32_t i = 0;
   int32_t nCount = m_Chunks.GetSize();
@@ skipping 43 matching lines @@
       FXSYS_memcpy(lpPreChunk->wChars + lpPreChunk->nUsed, lpCurChunk->wChars,
                    lpCurChunk->nUsed * sizeof(FX_WCHAR));
       lpPreChunk->nUsed += lpCurChunk->nUsed;
       m_pAllocator->Free(lpCurChunk);
       m_Chunks.RemoveAt(i);
       --i;
       --nCount;
     } else {
       lpPreChunk = lpCurChunk;
     }
-    if (pPause != NULL && pPause->NeedToPauseNow()) {
+    if (pPause && pPause->NeedToPauseNow())
       return FALSE;
-    }
   }
   m_bChanged = FALSE;
   return TRUE;
 }
 
 void CFDE_TxtEdtBuf::ResetChunkBuffer(int32_t nDefChunkCount,
                                       int32_t nChunkSize) {
   ASSERT(nChunkSize);
   ASSERT(nDefChunkCount);
   delete m_pAllocator;
@@ skipping 33 matching lines @@
   int32_t nCount = m_Chunks.GetSize();
   for (; i < nCount; i++) {
     nTotal += m_Chunks[i]->nUsed;
     if (nTotal > nIndex) {
       break;
     }
   }
   cp.nChunkIndex = i;
   cp.nCharIndex = m_Chunks[i]->nUsed - (nTotal - nIndex);
 }