Get rid of NULLs in core/

core/fxge/ge/fx_text_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_FXGE_GE_FX_TEXT_INT_H_
 #define CORE_FXGE_GE_FX_TEXT_INT_H_
 
 #include <map>
 
 #include "core/fxge/include/fx_font.h"
 #include "core/fxge/include/fx_freetype.h"
 
 struct _CFX_UniqueKeyGen {
   void Generate(int count, ...);
   FX_CHAR m_Key[128];
   int m_KeyLen;
 };
 class CFX_SizeGlyphCache {
  public:
   CFX_SizeGlyphCache() {}
   ~CFX_SizeGlyphCache();
   std::map<uint32_t, CFX_GlyphBitmap*> m_GlyphMap;
 };
 class CTTFontDesc {
  public:
   CTTFontDesc() {
     m_Type = 0;
-    m_pFontData = NULL;
+    m_pFontData = nullptr;
     m_RefCount = 0;
   }
   ~CTTFontDesc();
   // ret < 0, releaseface not appropriate for this object.
   // ret == 0, object released
   // ret > 0, object still alive, other referrers.
   int ReleaseFace(FXFT_Face face);
   int m_Type;
   union {
     struct {
@@ skipping 34 matching lines @@
   const CFX_ByteString m_FilePath;
   const CFX_ByteString m_FaceName;
   const CFX_ByteString m_FontTables;
   const uint32_t m_FontOffset;
   const uint32_t m_FileSize;
   uint32_t m_Styles;
   uint32_t m_Charsets;
 };
 
 #endif  // CORE_FXGE_GE_FX_TEXT_INT_H_