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

xfa/src/fxbarcode/oned/BC_OneDimReader.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 2008 ZXing authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ skipping 32 matching lines @@
                                                         int32_t& e) {
   FX_BOOL foundStart = FALSE;
   CFX_Int32Array* startRange = NULL;
   CFX_Int32Array startEndPattern;
   startEndPattern.SetSize(3);
   startEndPattern[0] = START_END_PATTERN[0];
   startEndPattern[1] = START_END_PATTERN[1];
   startEndPattern[2] = START_END_PATTERN[2];
   int32_t nextStart = 0;
   while (!foundStart) {
-    if (startRange != NULL) {
-      delete startRange;
-      startRange = NULL;
-    }
+    delete startRange;
     startRange = FindGuardPattern(row, nextStart, FALSE, &startEndPattern, e);
     BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
     int32_t start = (*startRange)[0];
     nextStart = (*startRange)[1];
     if (start <= 1) {
       break;
     }
     int32_t quietStart = start - (nextStart - start);
     if (quietStart >= 0) {
       FX_BOOL booT = row->IsRange(quietStart, start, FALSE, e);
@@ skipping 144 matching lines @@
     }
   }
   if (bestMatch >= 0) {
     return bestMatch;
   } else {
     e = BCExceptionNotFound;
     return 0;
   }
   return 0;
 }