refactor: use of unique_ptr instead of new

src/protocol/PacketDispatcher.cpp

@@ -25,7 +25,7 @@ void PacketDispatcher::UnregisterHandler(PacketHandler* handler) {
     }
 }
 
-void PacketDispatcher::Dispatch(Packet* packet) {
+void PacketDispatcher::Dispatch(const PacketPtr& packet) {
     if (!packet) return;
 
     PacketType type = packet->getType();