Remove foo != NULL checks in xfa/src/fxbarcode.

xfa/src/fxbarcode/qrcode/BC_QRDataBlock.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
 // Original code is licensed as follows:
 /*
  * Copyright 2007 ZXing authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ skipping 12 matching lines @@
 #include "xfa/src/fxbarcode/qrcode/BC_QRCoderECB.h"
 #include "xfa/src/fxbarcode/qrcode/BC_QRCoderECBlocks.h"
 #include "xfa/src/fxbarcode/qrcode/BC_QRCoderVersion.h"
 #include "xfa/src/fxbarcode/qrcode/BC_QRDataBlock.h"
 #include "xfa/src/fxbarcode/utils.h"
 
 CBC_QRDataBlock::CBC_QRDataBlock(int32_t numDataCodewords,
                                  CFX_ByteArray* codewords)
     : m_numDataCodewords(numDataCodewords), m_codewords(codewords) {}
 CBC_QRDataBlock::~CBC_QRDataBlock() {
-  if (m_codewords != NULL) {
-    delete m_codewords;
-    m_codewords = NULL;
-  }
+  delete m_codewords;
 }
 int32_t CBC_QRDataBlock::GetNumDataCodewords() {
   return m_numDataCodewords;
 }
 CFX_ByteArray* CBC_QRDataBlock::GetCodewords() {
   return m_codewords;
 }
 CFX_PtrArray* CBC_QRDataBlock::GetDataBlocks(
     CFX_ByteArray* rawCodewords,
     CBC_QRCoderVersion* version,
@@ skipping 56 matching lines @@
   int32_t max = ((CBC_QRDataBlock*)(*result)[0])->m_codewords->GetSize();
   for (i = shorterBlocksNumDataCodewords; i < max; i++) {
     for (int32_t y = 0; y < numResultBlocks; y++) {
       int32_t iOffset = y < longerBlocksStartAt ? i : i + 1;
       (*(((CBC_QRDataBlock*)(*result)[y])->m_codewords))[iOffset] =
           (*rawCodewords)[rawCodewordsOffset++];
     }
   }
   return result.release();
 }