Don't bother checking pointers before delete[] and FX_Free().

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 uint8_t OneLeadPos[256] = {
     8, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3,
@@ skipping 467 matching lines @@
   const uint8_t* m_pSrcBuf;
   FX_DWORD m_SrcSize;
   uint8_t* m_pScanlineBuf;
   uint8_t* m_pRefBuf;
 };
 CCodec_FaxDecoder::CCodec_FaxDecoder() {
   m_pScanlineBuf = NULL;
   m_pRefBuf = NULL;
 }
 CCodec_FaxDecoder::~CCodec_FaxDecoder() {
-  if (m_pScanlineBuf) {
     FX_Free(m_pScanlineBuf);
-  }
-  if (m_pRefBuf) {
     FX_Free(m_pRefBuf);
-  }
 }
 FX_BOOL CCodec_FaxDecoder::Create(const uint8_t* src_buf,
                                   FX_DWORD src_size,
                                   int width,
                                   int height,
                                   int K,
                                   FX_BOOL EndOfLine,
                                   FX_BOOL EncodedByteAlign,
                                   FX_BOOL BlackIs1,
                                   int Columns,
@@ skipping 253 matching lines @@
   m_pSrcBuf = src_buf;
   m_Cols = width;
   m_Rows = height;
   m_Pitch = pitch;
   m_pRefLine = FX_Alloc(uint8_t, m_Pitch);
   FXSYS_memset(m_pRefLine, 0xff, m_Pitch);
   m_pLineBuf = FX_Alloc2D(uint8_t, 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);
-  }
 }
 void CCodec_FaxEncoder::Encode(uint8_t*& dest_buf, FX_DWORD& dest_size) {
   int dest_bitpos = 0;
   uint8_t last_byte = 0;
   for (int i = 0; i < m_Rows; i++) {
     const uint8_t* scan_line = m_pSrcBuf + i * m_Pitch;
     FXSYS_memset(m_pLineBuf, 0, m_Pitch * 8);
     m_pLineBuf[0] = last_byte;
     _FaxEncode2DLine(m_pLineBuf, dest_bitpos, scan_line, m_pRefLine, m_Cols);
     m_DestBuf.AppendBlock(m_pLineBuf, dest_bitpos / 8);
@@ skipping 27 matching lines @@
     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;
 }