Convert NULL to nullptr

snapshot/memory_snapshot_mac.cc

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // 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 "snapshot/memory_snapshot_mac.h"
 
 #include "util/mach/task_memory.h"
 
 namespace crashpad {
 namespace internal {
 
 MemorySnapshotMac::MemorySnapshotMac()
     : MemorySnapshot(),
-      process_reader_(NULL),
+      process_reader_(nullptr),
       address_(0),
       size_(0),
       initialized_() {
 }
 
 MemorySnapshotMac::~MemorySnapshotMac() {
 }
 
 void MemorySnapshotMac::Initialize(ProcessReader* process_reader,
                                    uint64_t address,
@@ skipping 19 matching lines @@
   INITIALIZATION_STATE_DCHECK_VALID(initialized_);
   scoped_ptr<uint8_t[]> buffer(new uint8_t[size_]);
   if (!process_reader_->Memory()->Read(address_, size_, buffer.get())) {
     return false;
   }
   return delegate->MemorySnapshotDelegateRead(buffer.get(), size_);
 }
 
 }  // namespace internal
 }  // namespace crashpad