message: use Nan::AsyncResource::runInAsyncScope instead of Nan::MakeCallback
diff: @@ -271,12 +271,8 @@ NAN_METHOD(Database::Close) {
  v8::Local<v8::Value> argv[] = {
  Nan::New<v8::FunctionTemplate>(EmptyMethod)->GetFunction() // empty callback
  };
  - Nan::MakeCallback(
  - iterator->handle()
  - , end
  - , 1
  - , argv
  - );
  + Nan::AsyncResource ar("rocksdb:iterator.end");
  + ar.runInAsyncScope(iterator->handle(), end, 1, argv);
  }
  }
  } else {
  