Get rid of NULLs in xfa/

xfa/fxbarcode/pdf417/BC_PDF417.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 2006 Jeremias Maerki in part, and ZXing Authors in part
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ skipping 372 matching lines @@
 FX_FLOAT CBC_PDF417::PREFERRED_RATIO = 3.0f;
 FX_FLOAT CBC_PDF417::DEFAULT_MODULE_WIDTH = 0.357f;
 FX_FLOAT CBC_PDF417::HEIGHT = 2.0f;
 CBC_PDF417::CBC_PDF417() {
   m_compact = FALSE;
   m_compaction = AUTO;
   m_minCols = 1;
   m_maxCols = 30;
   m_maxRows = 90;
   m_minRows = 3;
-  m_barcodeMatrix = NULL;
+  m_barcodeMatrix = nullptr;
 }
 CBC_PDF417::CBC_PDF417(FX_BOOL compact) {
   m_compact = compact;
   m_compaction = AUTO;
   m_minCols = 1;
   m_maxCols = 30;
   m_maxRows = 90;
   m_minRows = 3;
-  m_barcodeMatrix = NULL;
+  m_barcodeMatrix = nullptr;
 }
 
 CBC_PDF417::~CBC_PDF417() {
   delete m_barcodeMatrix;
 }
 
 CBC_BarcodeMatrix* CBC_PDF417::getBarcodeMatrix() {
   return m_barcodeMatrix;
 }
 void CBC_PDF417::generateBarcodeLogic(CFX_WideString msg,
@@ skipping 119 matching lines @@
       encodeChar(pattern, 17, logic->getCurrentRow());
       encodeChar(STOP_PATTERN, 18, logic->getCurrentRow());
     }
   }
 }
 CFX_Int32Array* CBC_PDF417::determineDimensions(
     int32_t sourceCodeWords,
     int32_t errorCorrectionCodeWords,
     int32_t& e) {
   FX_FLOAT ratio = 0.0f;
-  CFX_Int32Array* dimension = NULL;
+  CFX_Int32Array* dimension = nullptr;
   for (int32_t cols = m_minCols; cols <= m_maxCols; cols++) {
     int32_t rows =
         calculateNumberOfRows(sourceCodeWords, errorCorrectionCodeWords, cols);
     if (rows < m_minRows) {
       break;
     }
     if (rows > m_maxRows) {
       continue;
     }
     FX_FLOAT newRatio =
         ((17 * cols + 69) * DEFAULT_MODULE_WIDTH) / (rows * HEIGHT);
     if (dimension &&
         fabsf(newRatio - PREFERRED_RATIO) > fabsf(ratio - PREFERRED_RATIO)) {
       continue;
     }
     ratio = newRatio;
     delete dimension;
     dimension = new CFX_Int32Array;
     dimension->Add(cols);
     dimension->Add(rows);
   }
-  if (dimension == NULL) {
+  if (!dimension) {
     int32_t rows = calculateNumberOfRows(sourceCodeWords,
                                          errorCorrectionCodeWords, m_minCols);
     if (rows < m_minRows) {
       dimension = new CFX_Int32Array;
       dimension->Add(m_minCols);
       dimension->Add(m_minRows);
     } else if (rows >= 3 && rows <= 90) {
       dimension = new CFX_Int32Array;
       dimension->Add(m_minCols);
       dimension->Add(rows);
     }
   }
-  if (dimension == NULL) {
+  if (!dimension) {
     e = BCExceptionUnableToFitMessageInColumns;
-    return NULL;
+    return nullptr;
   }
   return dimension;
 }