Get rid of NULLs in xfa/fxbarcode/

xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.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 2007 ZXing authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 
 #include "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256.h"
 #include "xfa/fxbarcode/common/reedsolomon/BC_ReedSolomonGF256Poly.h"
 
-CBC_ReedSolomonGF256* CBC_ReedSolomonGF256::QRCodeFild = NULL;
-CBC_ReedSolomonGF256* CBC_ReedSolomonGF256::DataMatrixField = NULL;
+CBC_ReedSolomonGF256* CBC_ReedSolomonGF256::QRCodeFild = nullptr;
+CBC_ReedSolomonGF256* CBC_ReedSolomonGF256::DataMatrixField = nullptr;
 void CBC_ReedSolomonGF256::Initialize() {
   QRCodeFild = new CBC_ReedSolomonGF256(0x011D);
   QRCodeFild->Init();
   DataMatrixField = new CBC_ReedSolomonGF256(0x012D);
   DataMatrixField->Init();
 }
 
 void CBC_ReedSolomonGF256::Finalize() {
   delete QRCodeFild;
   QRCodeFild = nullptr;
@@ skipping 28 matching lines @@
 }
 CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256::GetOne() {
   return m_one;
 }
 CBC_ReedSolomonGF256Poly* CBC_ReedSolomonGF256::BuildMonomial(
     int32_t degree,
     int32_t coefficient,
     int32_t& e) {
   if (degree < 0) {
     e = BCExceptionDegreeIsNegative;
-    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
   }
   if (coefficient == 0) {
     CBC_ReedSolomonGF256Poly* temp = m_zero->Clone(e);
-    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
     return temp;
   }
   CFX_Int32Array coefficients;
   coefficients.SetSize(degree + 1);
   coefficients[0] = coefficient;
   CBC_ReedSolomonGF256Poly* temp = new CBC_ReedSolomonGF256Poly();
   temp->Init(this, &coefficients, e);
-  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
   return temp;
 }
 int32_t CBC_ReedSolomonGF256::AddOrSubtract(int32_t a, int32_t b) {
   return a ^ b;
 }
 int32_t CBC_ReedSolomonGF256::Exp(int32_t a) {
   return m_expTable[a];
 }
 int32_t CBC_ReedSolomonGF256::Log(int32_t a, int32_t& e) {
   if (a == 0) {
@@ skipping 14 matching lines @@
     return 0;
   }
   if (a == 1) {
     return b;
   }
   if (b == 1) {
     return a;
   }
   return m_expTable[(m_logTable[a] + m_logTable[b]) % 255];
 }