Add safe FX_Alloc2D() macro

core/src/fxcodec/codec/fx_codec_fax.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 "../../../include/fxcodec/fx_codec.h"
 #include "codec_int.h"
 const FX_BYTE OneLeadPos[256] = {
     8, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4,
@@ skipping 931 matching lines @@
 {
     m_pSrcBuf = src_buf;
     m_Cols = width;
     m_Rows = height;
     m_Pitch = pitch;
     m_pRefLine = FX_Alloc(FX_BYTE, m_Pitch);
     if (m_pRefLine == NULL) {
         return;
     }
     FXSYS_memset8(m_pRefLine, 0xff, m_Pitch);
-    m_pLineBuf = FX_Alloc(FX_BYTE, m_Pitch * 8);
-    if (m_pLineBuf == NULL) {
-        return;
-    }
+    m_pLineBuf = FX_Alloc2D(FX_BYTE, m_Pitch, 8);
     m_DestBuf.EstimateSize(0, 10240);
 }
 CCodec_FaxEncoder::~CCodec_FaxEncoder()
 {
     if (m_pRefLine) {
         FX_Free(m_pRefLine);
     }
     if (m_pLineBuf) {
         FX_Free(m_pLineBuf);
     }
@@ skipping 25 matching lines @@
     encoder.Encode(dest_buf, dest_size);
     return TRUE;
 }
 ICodec_ScanlineDecoder* CCodec_FaxModule::CreateDecoder(FX_LPCBYTE src_buf, FX_DWORD src_size, int width, int height,
         int K, FX_BOOL EndOfLine, FX_BOOL EncodedByteAlign, FX_BOOL BlackIs1, int Columns, int Rows)
 {
     CCodec_FaxDecoder* pDecoder = new CCodec_FaxDecoder;
     pDecoder->Create(src_buf, src_size, width, height, K, EndOfLine, EncodedByteAlign, BlackIs1, Columns, Rows);
     return pDecoder;
 }