Revert "Remove FX_Alloc() null checks now that it can't return NULL."

core/include/fxcodec/fx_codec_def.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 _FX_CODEC_DEF_H_
 #define _FX_CODEC_DEF_H_
 enum FXCODEC_STATUS {
     FXCODEC_STATUS_ERROR = -1,
     FXCODEC_STATUS_FRAME_READY,
     FXCODEC_STATUS_FRAME_TOBECONTINUE,
     FXCODEC_STATUS_DECODE_READY,
     FXCODEC_STATUS_DECODE_TOBECONTINUE,
     FXCODEC_STATUS_DECODE_FINISH,
+    FXCODEC_STATUS_ERR_MEMORY,
     FXCODEC_STATUS_ERR_READ,
     FXCODEC_STATUS_ERR_FLUSH,
     FXCODEC_STATUS_ERR_FORMAT,
     FXCODEC_STATUS_ERR_PARAMS
 };
 #define JP2_SPACE_INVALID       -1
 #define JPX_SPACE_INVALID       -1
 #define JP2_SPACE_bilevel1      0
 #define JP2_SPACE_YCbCr1        1
 #define JP2_SPACE_YCbCr2        3
@@ skipping 35 matching lines @@
 #define EXIFTAG_FLOAT_DPIX                                      282
 #define EXIFTAG_FLOAT_DPIY                                      283
 #define EXIFTAG_USHORT_ORIENTATION                      274
 #define EXIFTAG_STRING_MANUFACTURER                     271
 #define EXIFTAG_STRING_MODULE                           272
 #define EXIFTAG_STRING_SOFTWARE                         305
 #define EXIFTAG_STRING_IAMGEDESCRIPTION         270
 #define EXIFTAG_STRING_DATETIME                         306
 #define EXIFTAG_STRING_COPYRIGHT                        33432
 #endif