Get rid of NULLs in xfa/fxbarcode/

xfa/fxbarcode/pdf417/BC_PDF417ECModulusGF.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 2012 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/pdf417/BC_PDF417Common.h"
 #include "xfa/fxbarcode/pdf417/BC_PDF417ECModulusGF.h"
 #include "xfa/fxbarcode/pdf417/BC_PDF417ECModulusPoly.h"
 #include "xfa/fxbarcode/utils.h"
 
-CBC_PDF417ECModulusGF* CBC_PDF417ECModulusGF::PDF417_GF = NULL;
+CBC_PDF417ECModulusGF* CBC_PDF417ECModulusGF::PDF417_GF = nullptr;
 void CBC_PDF417ECModulusGF::Initialize(int32_t& e) {
   PDF417_GF =
       new CBC_PDF417ECModulusGF(CBC_PDF417Common::NUMBER_OF_CODEWORDS, 3, e);
 }
 void CBC_PDF417ECModulusGF::Finalize() {
   delete PDF417_GF;
 }
 CBC_PDF417ECModulusGF::CBC_PDF417ECModulusGF(int32_t modulus,
                                              int32_t generator,
                                              int32_t& e) {
@@ skipping 24 matching lines @@
 }
 CBC_PDF417ECModulusPoly* CBC_PDF417ECModulusGF::getOne() {
   return m_one;
 }
 CBC_PDF417ECModulusPoly* CBC_PDF417ECModulusGF::buildMonomial(
     int32_t degree,
     int32_t coefficient,
     int32_t& e) {
   if (degree < 0) {
     e = BCExceptionIllegalArgument;
-    return NULL;
+    return nullptr;
   }
-  CBC_PDF417ECModulusPoly* modulusPoly = NULL;
+  CBC_PDF417ECModulusPoly* modulusPoly = nullptr;
   if (coefficient == 0) {
     modulusPoly = new CBC_PDF417ECModulusPoly(m_zero->getField(),
                                               m_zero->getCoefficients(), e);
-    BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+    BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
     return modulusPoly;
   }
   CFX_Int32Array coefficients;
   coefficients.SetSize(degree + 1);
   coefficients[0] = coefficient;
   modulusPoly = new CBC_PDF417ECModulusPoly(this, coefficients, e);
-  BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+  BC_EXCEPTION_CHECK_ReturnValue(e, nullptr);
   return modulusPoly;
 }
 int32_t CBC_PDF417ECModulusGF::add(int32_t a, int32_t b) {
   return (a + b) % m_modulus;
 }
 int32_t CBC_PDF417ECModulusGF::subtract(int32_t a, int32_t b) {
   return (m_modulus + a - b) % m_modulus;
 }
 int32_t CBC_PDF417ECModulusGF::exp(int32_t a) {
   return m_expTable[a];
@@ skipping 14 matching lines @@
 }
 int32_t CBC_PDF417ECModulusGF::multiply(int32_t a, int32_t b) {
   if (a == 0 || b == 0) {
     return 0;
   }
   return m_expTable[(m_logTable[a] + m_logTable[b]) % (m_modulus - 1)];
 }
 int32_t CBC_PDF417ECModulusGF::getSize() {
   return m_modulus;
 }