Added /KillReactor command to blow up the reactor in Multiplayer games

main/multi.c

@@ -1063,6 +1063,9 @@ void multi_send_message_end()
 			net_destroy_controlcen(NULL);
 			multi_send_destroy_controlcen(-1,Player_num);
 		}
+		multi_message_index = 0;
+		multi_sending_message = 0;
+		return;
 	}
 
 	Network_message_reciever = 100;