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

xfa/src/fxbarcode/qrcode/BC_QRDetector.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 97 matching lines @@
     CBC_ResultPoint* topRight,
     CBC_ResultPoint* bottomLeft,
     CBC_ResultPoint* alignmentPattern,
     int32_t dimension,
     int32_t& e) {
   FX_FLOAT dimMinusThree = (FX_FLOAT)dimension - 3.5f;
   FX_FLOAT bottomRightX;
   FX_FLOAT bottomRightY;
   FX_FLOAT sourceBottomRightX;
   FX_FLOAT sourceBottomRightY;
-  if (alignmentPattern != NULL) {
+  if (alignmentPattern) {
     bottomRightX = alignmentPattern->GetX();
     bottomRightY = alignmentPattern->GetY();
     sourceBottomRightX = sourceBottomRightY = dimMinusThree - 3.0f;
   } else {
     bottomRightX = (topRight->GetX() - topLeft->GetX()) + bottomLeft->GetX();
     bottomRightY = (topRight->GetY() - topLeft->GetY()) + bottomLeft->GetY();
     sourceBottomRightX = sourceBottomRightY = dimMinusThree;
   }
   CBC_QRGridSampler& sampler = CBC_QRGridSampler::GetInstance();
   CBC_CommonBitMatrix* cbm = sampler.SampleGrid(
@@ skipping 139 matching lines @@
   int32_t alignmentAreaBottomY =
       std::min(m_image->GetHeight() - 1, estAlignmentY + allowance);
   CBC_QRAlignmentPatternFinder alignmentFinder(
       m_image, alignmentAreaLeftX, alignmentAreaTopY,
       alignmentAreaRightX - alignmentAreaLeftX,
       alignmentAreaBottomY - alignmentAreaTopY, overallEstModuleSize);
   CBC_QRAlignmentPattern* qap = alignmentFinder.Find(e);
   BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
   return qap;
 }