Get rid of NULLs in core/

core/fxge/ge/fx_ge_font.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/fpdfapi/fpdf_font/include/cpdf_font.h"
 #include "core/fxge/ge/fx_text_int.h"
 #include "core/fxge/include/fx_freetype.h"
 #include "core/fxge/include/fx_ge.h"
@@ skipping 42 matching lines @@
   m_hHandle = NULL;
   m_bDwLoaded = FALSE;
 #ifdef PDF_ENABLE_XFA
   m_bLogic = FALSE;
   m_pOwnedStream = NULL;
 #endif  // PDF_ENABLE_XFA
 }
 
 #ifdef PDF_ENABLE_XFA
 FX_BOOL CFX_Font::LoadClone(const CFX_Font* pFont) {
-  if (pFont == NULL) {
+  if (!pFont)
     return FALSE;
-  }
+
   m_bLogic = TRUE;
   if (pFont->m_pSubstFont) {
     m_pSubstFont = new CFX_SubstFont;
     m_pSubstFont->m_Charset = pFont->m_pSubstFont->m_Charset;
     m_pSubstFont->m_ExtHandle = pFont->m_pSubstFont->m_ExtHandle;
     m_pSubstFont->m_SubstFlags = pFont->m_pSubstFont->m_SubstFlags;
     m_pSubstFont->m_Weight = pFont->m_pSubstFont->m_Weight;
     m_pSubstFont->m_Family = pFont->m_pSubstFont->m_Family;
     m_pSubstFont->m_ItalicAngle = pFont->m_pSubstFont->m_ItalicAngle;
   }
@@ skipping 156 matching lines @@
   return width;
 }
 
 FX_BOOL CFX_Font::LoadEmbedded(const uint8_t* data, uint32_t size) {
   m_pFontDataAllocation = FX_Alloc(uint8_t, size);
   FXSYS_memcpy(m_pFontDataAllocation, data, size);
   m_Face = FT_LoadFont(m_pFontDataAllocation, size);
   m_pFontData = m_pFontDataAllocation;
   m_bEmbedded = TRUE;
   m_dwSize = size;
-  return m_Face != NULL;
+  return !!m_Face;
 }
 
 FX_BOOL CFX_Font::IsTTFont() const {
   if (!m_Face)
     return FALSE;
   return FXFT_Is_Face_TT_OT(m_Face) == FXFT_FACE_FLAG_SFNT;
 }
 
 int CFX_Font::GetAscent() const {
   if (!m_Face)
@@ skipping 278 matching lines @@
   for (size_t i = 0; i < FX_ArraySize(g_EncodingID); ++i) {
     CFX_UnicodeEncodingEx* pFontEncoding =
         _FXFM_CreateFontEncoding(pFont, g_EncodingID[i]);
     if (pFontEncoding) {
       return pFontEncoding;
     }
   }
   return NULL;
 }
 #endif  // PDF_ENABLE_XFA