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

xfa/src/fxbarcode/pdf417/BC_PDF417DetectionResultRowIndicatorColumn.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 2013 ZXing authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ skipping 22 matching lines @@
     CBC_BoundingBox* boundingBox,
     FX_BOOL isLeft)
     : CBC_DetectionResultColumn(boundingBox) {
   m_isLeft = isLeft;
 }
 CBC_DetectionResultRowIndicatorColumn::
     ~CBC_DetectionResultRowIndicatorColumn() {}
 void CBC_DetectionResultRowIndicatorColumn::setRowNumbers() {
   for (int32_t i = 0; i < m_codewords->GetSize(); i++) {
     CBC_Codeword* codeword = (CBC_Codeword*)m_codewords->GetAt(i);
-    if (codeword != NULL) {
+    if (codeword) {
       codeword->setRowNumberAsRowIndicatorColumn();
     }
   }
 }
 int32_t
 CBC_DetectionResultRowIndicatorColumn::adjustCompleteIndicatorColumnRowNumbers(
     CBC_BarcodeMetadata barcodeMetadata) {
   CFX_PtrArray* codewords = getCodewords();
   setRowNumbers();
   removeIncorrectCodewords(codewords, barcodeMetadata);
@@ skipping 56 matching lines @@
   CBC_BarcodeMetadata* barcodeMetadata = getBarcodeMetadata();
   if (barcodeMetadata == NULL) {
     e = BCExceptionCannotMetadata;
     return NULL;
   }
   adjustIncompleteIndicatorColumnRowNumbers(*barcodeMetadata);
   CFX_Int32Array* result = new CFX_Int32Array;
   result->SetSize(barcodeMetadata->getRowCount());
   for (int32_t i = 0; i < getCodewords()->GetSize(); i++) {
     CBC_Codeword* codeword = (CBC_Codeword*)getCodewords()->GetAt(i);
-    if (codeword != NULL) {
+    if (codeword) {
       result->SetAt(codeword->getRowNumber(),
                     result->GetAt(codeword->getRowNumber()) + 1);
     }
   }
   return result;
 }
 int32_t CBC_DetectionResultRowIndicatorColumn::
     adjustIncompleteIndicatorColumnRowNumbers(
         CBC_BarcodeMetadata barcodeMetadata) {
   CBC_BoundingBox* boundingBox = getBoundingBox();
@@ skipping 125 matching lines @@
         }
         break;
       case 2:
         if (rowIndicatorValue + 1 != barcodeMetadata.getColumnCount()) {
           codewords->SetAt(codewordRow, NULL);
         }
         break;
     }
   }
 }