Get rid of NULLs in core/

core/fpdfapi/fpdf_font/cpdf_font.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/fpdfapi/fpdf_font/include/cpdf_font.h"
 
 #include <memory>
 
@@ skipping 42 matching lines @@
       m_pToUnicodeMap(nullptr),
       m_bToUnicodeLoaded(FALSE),
       m_Flags(0),
       m_StemV(0),
       m_Ascent(0),
       m_Descent(0),
       m_ItalicAngle(0) {}
 
 CPDF_Font::~CPDF_Font() {
   delete m_pToUnicodeMap;
-  m_pToUnicodeMap = NULL;
+  m_pToUnicodeMap = nullptr;
 
   if (m_pFontFile) {
     m_pDocument->GetPageData()->ReleaseFontFileStreamAcc(
         const_cast<CPDF_Stream*>(m_pFontFile->GetStream()->AsStream()));
   }
 }
 
 bool CPDF_Font::IsType1Font() const {
   return false;
 }
@@ skipping 251 matching lines @@
       CPDF_ModuleMgr::Get()->GetPageModule()->GetFontGlobals();
   CPDF_Font* pFont = pFontGlobals->Find(pDoc, font_id);
   if (pFont) {
     return pFont;
   }
   CPDF_Dictionary* pDict = new CPDF_Dictionary;
   pDict->SetAtName("Type", "Font");
   pDict->SetAtName("Subtype", "Type1");
   pDict->SetAtName("BaseFont", fontname);
   pDict->SetAtName("Encoding", "WinAnsiEncoding");
-  pFont = CPDF_Font::CreateFontF(NULL, pDict);
+  pFont = CPDF_Font::CreateFontF(nullptr, pDict);
   pFontGlobals->Set(pDoc, font_id, pFont);
   return pFont;
 }
 
 CPDF_Font* CPDF_Font::CreateFontF(CPDF_Document* pDoc,
                                   CPDF_Dictionary* pFontDict) {
   CFX_ByteString type = pFontDict->GetStringBy("Subtype");
   std::unique_ptr<CPDF_Font> pFont;
   if (type == "TrueType") {
     CFX_ByteString tag = pFontDict->GetStringBy("BaseFont").Left(4);
@@ skipping 116 matching lines @@
   if (charcode < 0 || charcode >= 256)
     return nullptr;
 
   const FX_CHAR* name = nullptr;
   if (pCharNames)
     name = pCharNames[charcode].c_str();
   if ((!name || name[0] == 0) && iBaseEncoding)
     name = PDF_CharNameFromPredefinedCharSet(iBaseEncoding, charcode);
   return name && name[0] ? name : nullptr;
 }