Get rid of most instance of 'foo != NULL'

core/src/fxge/ge/fx_ge_ps.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/include/fxge/fx_ge.h"
 #include "core/include/fxcodec/fx_codec.h"
 #include "text_int.h"
 
@@ skipping 399 matching lines @@
     if (pIccTransform) {
       FXDIB_Format format = m_bCmykOutput ? FXDIB_Cmyk : FXDIB_Rgb;
       pConverted = pSource->CloneConvert(format, NULL, pIccTransform);
     } else {
       switch (pSource->GetFormat()) {
         case FXDIB_1bppRgb:
         case FXDIB_Rgb32:
           pConverted = pSource->CloneConvert(FXDIB_Rgb);
           break;
         case FXDIB_8bppRgb:
-          if (pSource->GetPalette() != NULL) {
+          if (pSource->GetPalette()) {
             pConverted = pSource->CloneConvert(FXDIB_Rgb);
           }
           break;
         case FXDIB_1bppCmyk:
           pConverted = pSource->CloneConvert(FXDIB_Cmyk);
           break;
         case FXDIB_8bppCmyk:
-          if (pSource->GetPalette() != NULL) {
+          if (pSource->GetPalette()) {
             pConverted = pSource->CloneConvert(FXDIB_Cmyk);
           }
           break;
         default:
           break;
       }
     }
     if (pConverted == NULL) {
       OUTPUT_PS("\nQ\n");
       return FALSE;
@@ skipping 251 matching lines @@
   FX_DWORD dest_size;
   CCodec_ModuleMgr* pEncoders = CFX_GEModule::Get()->GetCodecModule();
   if (pEncoders &&
       pEncoders->GetBasicModule()->A85Encode(data, len, dest_buf, dest_size)) {
     m_pOutput->OutputPS((const FX_CHAR*)dest_buf, dest_size);
     FX_Free(dest_buf);
   } else {
     m_pOutput->OutputPS((const FX_CHAR*)data, len);
   }
 }