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

core/src/fxcodec/codec/fx_codec_flate.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 "../../../../third_party/base/nonstd_unique_ptr.h"
 #include "../../../../third_party/zlib_v128/zlib.h"
 #include "../../../include/fxcodec/fx_codec.h"
 #include "../../../include/fxcodec/fx_codec_flate.h"
@@ skipping 623 matching lines @@
 };
 CCodec_FlateScanlineDecoder::CCodec_FlateScanlineDecoder() {
   m_pFlate = NULL;
   m_pScanline = NULL;
   m_pLastLine = NULL;
   m_pPredictBuffer = NULL;
   m_pPredictRaw = NULL;
   m_LeftOver = 0;
 }
 CCodec_FlateScanlineDecoder::~CCodec_FlateScanlineDecoder() {
-  if (m_pScanline) {
     FX_Free(m_pScanline);
-  }
-  if (m_pLastLine) {
     FX_Free(m_pLastLine);
-  }
-  if (m_pPredictBuffer) {
     FX_Free(m_pPredictBuffer);
-  }
-  if (m_pPredictRaw) {
     FX_Free(m_pPredictRaw);
-  }
   if (m_pFlate) {
     FPDFAPI_FlateEnd(m_pFlate);
   }
 }
 void CCodec_FlateScanlineDecoder::Create(const uint8_t* src_buf,
                                          FX_DWORD src_size,
                                          int width,
                                          int height,
                                          int nComps,
                                          int bpc,
@@ skipping 302 matching lines @@
                                    FX_DWORD src_size,
                                    uint8_t*& dest_buf,
                                    FX_DWORD& dest_size) {
   dest_size = src_size + src_size / 1000 + 12;
   dest_buf = FX_Alloc(uint8_t, dest_size);
   unsigned long temp_size = dest_size;
   FPDFAPI_FlateCompress(dest_buf, &temp_size, src_buf, src_size);
   dest_size = (FX_DWORD)temp_size;
   return TRUE;
 }