Get rid of NULLs in core/

core/fpdfdoc/cpdf_variabletext.cpp

 // Copyright 2016 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/fpdfdoc/include/cpdf_variabletext.h"
 
 #include "core/fpdfapi/fpdf_font/include/cpdf_font.h"
 #include "core/fpdfdoc/cpvt_wordinfo.h"
@@ skipping 292 matching lines @@
   if (m_bRichText) {
     CPVT_WordProps* pNewProps =
         pWordProps ? new CPVT_WordProps(*pWordProps) : new CPVT_WordProps();
     pNewProps->nFontIndex =
         GetWordFontIndex(word, charset, pWordProps->nFontIndex);
     return AddWord(newplace, CPVT_WordInfo(word, charset, -1, pNewProps));
   }
   int32_t nFontIndex =
       GetSubWord() > 0 ? GetDefaultFontIndex()
                        : GetWordFontIndex(word, charset, GetDefaultFontIndex());
-  return AddWord(newplace, CPVT_WordInfo(word, charset, nFontIndex, NULL));
+  return AddWord(newplace, CPVT_WordInfo(word, charset, nFontIndex, nullptr));
 }
 
 CPVT_WordPlace CPDF_VariableText::InsertSection(
     const CPVT_WordPlace& place,
     const CPVT_SecProps* pSecProps,
     const CPVT_WordProps* pWordProps) {
   int32_t nTotlaWords = GetTotalWords();
   if (m_nLimitChar > 0 && nTotlaWords >= m_nLimitChar)
     return place;
   if (m_nCharArray > 0 && nTotlaWords >= m_nCharArray)
@@ skipping 818 matching lines @@
 
 CPDF_VariableText::Iterator* CPDF_VariableText::GetIterator() {
   if (!m_pVTIterator)
     m_pVTIterator.reset(new CPDF_VariableText::Iterator(this));
   return m_pVTIterator.get();
 }
 
 void CPDF_VariableText::SetProvider(CPDF_VariableText::Provider* pProvider) {
   m_pVTProvider = pProvider;
 }