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

xfa/src/fxbarcode/datamatrix/BC_DataMatrixBitMatrixParser.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 27 matching lines @@
   }
   m_version = ReadVersion(bitMatrix, e);
   BC_EXCEPTION_CHECK_ReturnVoid(e);
   m_mappingBitMatrix = ExtractDataRegion(bitMatrix, e);
   BC_EXCEPTION_CHECK_ReturnVoid(e);
   m_readMappingMatrix = new CBC_CommonBitMatrix();
   m_readMappingMatrix->Init(m_mappingBitMatrix->GetWidth(),
                             m_mappingBitMatrix->GetHeight());
 }
 CBC_DataMatrixBitMatrixParser::~CBC_DataMatrixBitMatrixParser() {
-  if (m_mappingBitMatrix != NULL) {
-    delete m_mappingBitMatrix;
-  }
-  m_mappingBitMatrix = NULL;
-  if (m_readMappingMatrix != NULL) {
-    delete m_readMappingMatrix;
-  }
-  m_readMappingMatrix = NULL;
+  delete m_mappingBitMatrix;
+  delete m_readMappingMatrix;
 }
 CBC_DataMatrixVersion* CBC_DataMatrixBitMatrixParser::GetVersion() {
   return m_version;
 }
 CBC_DataMatrixVersion* CBC_DataMatrixBitMatrixParser::ReadVersion(
     CBC_CommonBitMatrix* bitMatrix,
     int32_t& e) {
   int32_t rows = bitMatrix->GetHeight();
   int32_t columns = bitMatrix->GetWidth();
   CBC_DataMatrixVersion* temp =
@@ skipping 305 matching lines @@
           if (bitMatrix->Get(readColumnOffset, readRowOffset)) {
             int32_t writeColumnOffset = dataRegionColumnOffset + j;
             bitMatrixWithoutAlignment->Set(writeColumnOffset, writeRowOffset);
           }
         }
       }
     }
   }
   return bitMatrixWithoutAlignment;
 }