Get rid of NULLs in xfa/fxbarcode/

xfa/fxbarcode/qrcode/BC_QRCoderEncoder.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 238 matching lines @@
       e = BCExceptionNoSuchVersion;
       BC_EXCEPTION_CHECK_ReturnValue(e, 0);
     }
   }
   return -1;
 }
 
 void CBC_QRCoderEncoder::MergeString(CFX_ArrayTemplate<Make_Pair*>* result,
                                      int32_t versionNum,
                                      int32_t& e) {
-  Make_Pair* first = NULL;
-  Make_Pair* second = NULL;
+  Make_Pair* first = nullptr;
+  Make_Pair* second = nullptr;
   size_t mergeNum = 0;
   int32_t i;
   for (i = 0; ((i < result->GetSize()) && (i + 1 < result->GetSize())); i++) {
     first = (*result)[i];
     second = (*result)[i + 1];
     if (first->m_mode == CBC_QRCoderMode::sALPHANUMERIC) {
       int32_t tmp = GetSpanByVersion(CBC_QRCoderMode::sALPHANUMERIC,
                                      CBC_QRCoderMode::sBYTE, versionNum, e);
       BC_EXCEPTION_CHECK_ReturnVoid(e);
       if ((second->m_mode == CBC_QRCoderMode::sBYTE) &&
@@ skipping 80 matching lines @@
     CBC_QRCoder* qrCode,
     int32_t versionSpecify,
     int32_t& e) {
   CFX_ByteString encoding = "utf8";
   CBC_QRCoderMode* mode = CBC_QRCoderMode::sBYTE;
   CFX_ArrayTemplate<Make_Pair*> splitResult;
   CBC_QRCoderBitVector dataBits;
   dataBits.Init();
   SplitString(content, &splitResult);
   MergeString(&splitResult, versionSpecify, e);
-  BC_EXCEPTION_CHECK_ReturnVoid(e) CBC_QRCoderMode* tempMode = NULL;
+  BC_EXCEPTION_CHECK_ReturnVoid(e) CBC_QRCoderMode* tempMode = nullptr;
   for (int32_t i = 0; i < splitResult.GetSize(); i++) {
     AppendBytes(splitResult[i]->m_string, splitResult[i]->m_mode, &dataBits,
                 encoding, e);
     if (e != BCExceptionNO) {
       for (int32_t y = 0; y < splitResult.GetSize(); y++)
         delete splitResult[y];
       return;
     }
   }
   int32_t numInputBytes = dataBits.sizeInBytes();
@@ skipping 49 matching lines @@
     CBC_QRCoder* qrCode,
     int32_t& e) {
   CFX_ByteString encoding = "utf8";
   CBC_QRCoderMode* mode = CBC_QRCoderMode::sBYTE;
   CFX_ArrayTemplate<Make_Pair*> splitResult;
   CBC_QRCoderBitVector dataBits;
   dataBits.Init();
   SplitString(content, &splitResult);
   MergeString(&splitResult, 8, e);
   BC_EXCEPTION_CHECK_ReturnVoid(e);
-  CBC_QRCoderMode* tempMode = NULL;
+  CBC_QRCoderMode* tempMode = nullptr;
   for (int32_t i = 0; i < splitResult.GetSize(); i++) {
     AppendBytes(splitResult[i]->m_string, splitResult[i]->m_mode, &dataBits,
                 encoding, e);
     if (e != BCExceptionNO) {
       for (int32_t l = 0; l < splitResult.GetSize(); l++)
         delete splitResult[l];
       return;
     }
   }
   int32_t numInputBytes = dataBits.sizeInBytes();
   InitQRCode(numInputBytes, ecLevel, mode, qrCode, e);
   BC_EXCEPTION_CHECK_ReturnVoid(e) CBC_QRCoderBitVector headerAndDataBits;
   headerAndDataBits.Init();
-  tempMode = NULL;
+  tempMode = nullptr;
   int32_t versionNum = qrCode->GetVersion();
 sign:
   AppendDataModeLenghInfo(splitResult, headerAndDataBits, tempMode, qrCode,
                           encoding, e);
   if (e != BCExceptionNO) {
     goto catchException;
   }
   numInputBytes = headerAndDataBits.sizeInBytes();
   TerminateBits(qrCode->GetNumDataBytes(), &headerAndDataBits, e);
   if (e != BCExceptionNO) {
@@ skipping 471 matching lines @@
     int32_t& e) {
   int32_t numDataBytes = dataBytes->Size();
   CFX_Int32Array toEncode;
   toEncode.SetSize(numDataBytes + numEcBytesInBlock);
   for (int32_t i = 0; i < numDataBytes; i++) {
     toEncode[i] = (dataBytes->At(i));
   }
   CBC_ReedSolomonEncoder encode(CBC_ReedSolomonGF256::QRCodeFild);
   encode.Init();
   encode.Encode(&toEncode, numEcBytesInBlock, e);
-  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
   CBC_CommonByteArray* ecBytes = new CBC_CommonByteArray(numEcBytesInBlock);
   for (int32_t j = 0; j < numEcBytesInBlock; j++) {
     ecBytes->Set(j, toEncode[numDataBytes + j]);
   }
   return ecBytes;
 }