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

xfa/src/fxbarcode/qrcode/BC_QRAlignmentPatternFinder.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 55 matching lines @@
     int32_t currentState = 0;
     while (j < maxJ) {
       if (m_image->Get(j, i)) {
         if (currentState == 1) {
           stateCount[currentState]++;
         } else {
           if (currentState == 2) {
             if (FoundPatternCross(stateCount)) {
               CBC_QRAlignmentPattern* confirmed =
                   HandlePossibleCenter(stateCount, i, j);
-              if (confirmed != NULL) {
+              if (confirmed) {
                 return confirmed;
               }
             }
             stateCount[0] = stateCount[2];
             stateCount[1] = 1;
             stateCount[2] = 0;
             currentState = 1;
           } else {
             stateCount[++currentState]++;
           }
         }
       } else {
         if (currentState == 1) {
           currentState++;
         }
         stateCount[currentState]++;
       }
       j++;
     }
     if (FoundPatternCross(stateCount)) {
       CBC_QRAlignmentPattern* confirmed =
           HandlePossibleCenter(stateCount, i, maxJ);
-      if (confirmed != NULL) {
+      if (confirmed) {
         return confirmed;
       }
     }
   }
   if (m_possibleCenters.GetSize() != 0) {
     return ((CBC_QRAlignmentPattern*)(m_possibleCenters[0]))->Clone();
   }
   e = BCExceptionRead;
   BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
   return NULL;
@@ skipping 81 matching lines @@
       if (center->AboutEquals(estimatedModuleSize, centerI, centerJ)) {
         return new CBC_QRAlignmentPattern(centerJ, centerI,
                                           estimatedModuleSize);
       }
     }
     m_possibleCenters.Add(
         new CBC_QRAlignmentPattern(centerJ, centerI, estimatedModuleSize));
   }
   return NULL;
 }