Remove foo != NULL checks in xfa/src/fxbarcode.

xfa/src/fxbarcode/common/BC_CommonByteMatrix.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 15 matching lines @@
 CBC_CommonByteMatrix::CBC_CommonByteMatrix(int32_t width, int32_t height) {
   m_height = height;
   m_width = width;
   m_bytes = NULL;
 }
 void CBC_CommonByteMatrix::Init() {
   m_bytes = FX_Alloc2D(uint8_t, m_height, m_width);
   FXSYS_memset(m_bytes, 0xff, m_height * m_width);
 }
 CBC_CommonByteMatrix::~CBC_CommonByteMatrix() {
-  if (m_bytes != NULL) {
-    FX_Free(m_bytes);
-    m_bytes = NULL;
-  }
+  FX_Free(m_bytes);
 }
 int32_t CBC_CommonByteMatrix::GetHeight() {
   return m_height;
 }
 int32_t CBC_CommonByteMatrix::GetWidth() {
   return m_width;
 }
 uint8_t CBC_CommonByteMatrix::Get(int32_t x, int32_t y) {
   return m_bytes[y * m_width + x];
 }
 void CBC_CommonByteMatrix::Set(int32_t x, int32_t y, int32_t value) {
   m_bytes[y * m_width + x] = (uint8_t)value;
 }
 void CBC_CommonByteMatrix::Set(int32_t x, int32_t y, uint8_t value) {
   m_bytes[y * m_width + x] = value;
 }
 void CBC_CommonByteMatrix::clear(uint8_t value) {
   int32_t y;
   for (y = 0; y < m_height; y++) {
     int32_t x;
     for (x = 0; x < m_width; x++) {
       m_bytes[y * m_width + x] = value;
     }
   }
 }
 uint8_t* CBC_CommonByteMatrix::GetArray() {
   return m_bytes;
 }