Get rid of NULLs in xfa/fxbarcode/

xfa/fxbarcode/pdf417/BC_PDF417Reader.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 2009 ZXing authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ skipping 76 matching lines @@
 
 CFX_ByteString CBC_PDF417Reader::Decode(CBC_BinaryBitmap* image,
                                         int32_t hints,
                                         int32_t& e) {
   CFX_ByteString bs = Decode(image, FALSE, 0, e);
   BC_EXCEPTION_CHECK_ReturnValue(e, "");
   return bs;
 }
 int32_t CBC_PDF417Reader::getMaxWidth(CBC_ResultPoint* p1,
                                       CBC_ResultPoint* p2) {
-  if (p1 == NULL || p2 == NULL) {
+  if (!p1 || !p2)
     return 0;
-  }
   return (int32_t)FXSYS_fabs(p1->GetX() - p2->GetX());
 }
 int32_t CBC_PDF417Reader::getMinWidth(CBC_ResultPoint* p1,
                                       CBC_ResultPoint* p2) {
   if (!p1 || !p2)
     return std::numeric_limits<int32_t>::max();
   return (int32_t)FXSYS_fabs(p1->GetX() - p2->GetX());
 }
 
 int32_t CBC_PDF417Reader::getMaxCodewordWidth(
@@ skipping 14 matching lines @@
   int32_t a = getMinWidth(p.GetAt(6), p.GetAt(2)) *
               CBC_PDF417Common::MODULES_IN_CODEWORD /
               CBC_PDF417Common::MODULES_IN_STOP_PATTERN;
   int32_t b = getMinWidth(p.GetAt(7), p.GetAt(3)) *
               CBC_PDF417Common::MODULES_IN_CODEWORD /
               CBC_PDF417Common::MODULES_IN_STOP_PATTERN;
   int32_t c = std::min(a, getMinWidth(p.GetAt(0), p.GetAt(4)));
   int32_t d = std::min(b, getMinWidth(p.GetAt(1), p.GetAt(5)));
   return std::min(c, d);
 }