correct type

packet.go

@@ -92,7 +92,7 @@ func ReadPacket[V Packet | CartPacket](conn io.Reader, packet *V) error {
 	return binary.Read(conn, binary.LittleEndian, packet)
 }
 
-func GetPacketData(conn io.Reader, len int) ([]byte, error) {
+func GetPacketData(conn io.Reader, len uint16) ([]byte, error) {
 	data := make([]byte, len)
 	_, err := conn.Read(data)
 	return data, err
@@ -105,7 +105,7 @@ func ReceivePacket(conn io.Reader) (uint16, []byte, error) {
 		return packet.MessageType, nil, err
 	}
 
-	data, err := GetPacketData(conn, int(packet.DataLength))
+	data, err := GetPacketData(conn, packet.DataLength)
 	if err != nil {
 		return packet.MessageType, nil, err
 	}