Get rid of NULLs in xfa/fxbarcode/

xfa/fxbarcode/datamatrix/BC_DataMatrixWriter.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 37 matching lines @@
 FX_BOOL CBC_DataMatrixWriter::SetErrorCorrectionLevel(int32_t level) {
   m_iCorrectLevel = level;
   return TRUE;
 }
 uint8_t* CBC_DataMatrixWriter::Encode(const CFX_WideString& contents,
                                       int32_t& outWidth,
                                       int32_t& outHeight,
                                       int32_t& e) {
   if (outWidth < 0 || outHeight < 0) {
     e = BCExceptionHeightAndWidthMustBeAtLeast1;
-    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
   }
   CBC_SymbolShapeHint::SymbolShapeHint shape =
       CBC_SymbolShapeHint::FORCE_SQUARE;
-  CBC_Dimension* minSize = NULL;
-  CBC_Dimension* maxSize = NULL;
+  CBC_Dimension* minSize = nullptr;
+  CBC_Dimension* maxSize = nullptr;
   CFX_WideString ecLevel;
   CFX_WideString encoded = CBC_HighLevelEncoder::encodeHighLevel(
       contents, ecLevel, shape, minSize, maxSize, e);
-  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
   CBC_SymbolInfo* symbolInfo = CBC_SymbolInfo::lookup(
       encoded.GetLength(), shape, minSize, maxSize, TRUE, e);
-  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
   CFX_WideString codewords =
       CBC_ErrorCorrection::encodeECC200(encoded, symbolInfo, e);
-  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
   CBC_DefaultPlacement* placement =
       new CBC_DefaultPlacement(codewords, symbolInfo->getSymbolDataWidth(e),
                                symbolInfo->getSymbolDataHeight(e));
-  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
   placement->place();
   CBC_CommonByteMatrix* bytematrix = encodeLowLevel(placement, symbolInfo, e);
-  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
   outWidth = bytematrix->GetWidth();
   outHeight = bytematrix->GetHeight();
   uint8_t* result = FX_Alloc2D(uint8_t, outWidth, outHeight);
   FXSYS_memcpy(result, bytematrix->GetArray(), outWidth * outHeight);
   delete bytematrix;
   delete placement;
   return result;
 }
 CBC_CommonByteMatrix* CBC_DataMatrixWriter::encodeLowLevel(
     CBC_DefaultPlacement* placement,
     CBC_SymbolInfo* symbolInfo,
     int32_t& e) {
   int32_t symbolWidth = symbolInfo->getSymbolDataWidth(e);
-  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
   int32_t symbolHeight = symbolInfo->getSymbolDataHeight(e);
-  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
   CBC_CommonByteMatrix* matrix = new CBC_CommonByteMatrix(
       symbolInfo->getSymbolWidth(e), symbolInfo->getSymbolHeight(e));
-  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
   matrix->Init();
   int32_t matrixY = 0;
   for (int32_t y = 0; y < symbolHeight; y++) {
     int32_t matrixX;
     if ((y % symbolInfo->m_matrixHeight) == 0) {
       matrixX = 0;
       for (int32_t x = 0; x < symbolInfo->getSymbolWidth(e); x++) {
         matrix->Set(matrixX, matrixY, (x % 2) == 0);
         matrixX++;
       }
@@ skipping 17 matching lines @@
       matrixX = 0;
       for (int32_t x = 0; x < symbolInfo->getSymbolWidth(e); x++) {
         matrix->Set(matrixX, matrixY, TRUE);
         matrixX++;
       }
       matrixY++;
     }
   }
   return matrix;
 }