remove id from dispatcher

test/test_message.cpp

@@ -61,10 +61,9 @@ int main() {
 
 	// dispatch tests
 
-	MyHandler h;
+	auto h = std::make_shared<MyHandler>();
 	PacketDispatcher d;
-	d.RegisterHandler(PacketID::KeepAlive, &h);
-	d.RegisterHandler(PacketID::MDC, &h);
+	d.RegisterHandler(h);
 	d.Dispatch(m);
 	PacketFactory f;
 	auto message = f.CreateMessage(PacketID::KeepAlive);