win: Make reading NT_IMAGE_HEADERS work cross-bitness

snapshot/win/crashpad_snapshot_test_crashing_child.cc

 // Copyright 2015 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 <stdint.h>
-#include <stdlib.h>
 #include <windows.h>
 
 #include "base/logging.h"
 #include "client/crashpad_client.h"
 #include "util/file/file_io.h"
 #include "util/win/address_types.h"
 
 __declspec(noinline) crashpad::WinVMAddress CurrentAddress() {
   return reinterpret_cast<crashpad::WinVMAddress>(_ReturnAddress());
 }
 
 int main(int argc, char* argv[]) {
   CHECK_EQ(argc, 2);
 
   crashpad::CrashpadClient client;
   CHECK(client.SetHandler(argv[1]));
   CHECK(client.UseHandler());
 
   HANDLE out = GetStdHandle(STD_OUTPUT_HANDLE);
-  CHECK_NE(out, INVALID_HANDLE_VALUE);
+  PCHECK(out != INVALID_HANDLE_VALUE) << "GetStdHandle";
   crashpad::WinVMAddress break_address = CurrentAddress();
   crashpad::CheckedWriteFile(out, &break_address, sizeof(break_address));
 
   __debugbreak();
 
   return 0;
 }