(svn r19620) -Fix: desync when a command is received and in the queue while a client starts joining, i.e. save the game state. This can happen in two ways: with frame_freq > 1 a command received in a previous frame might not be executed yet or when a command is received in the same frame as the join but before the savegame is made. In both cases the joining client would not get all commands to get in-sync with the server (and the other clients).

src/network/network_server.cpp

@@ -353,6 +353,7 @@ DEF_SERVER_SEND_COMMAND(PACKET_SERVER_MAP)
 
 		sent_packets = 4; // We start with trying 4 packets
 
+		NetworkSyncCommandQueue(cs);
 		cs->status = STATUS_MAP;
 		/* Mark the start of download */
 		cs->last_frame = _frame_counter;