Some connections may not be closed finally

[igor-sladkov]

There is a bug in cs104_slave.c which appeared in 2.3.2.
Since this version closing of finished connections has been moved to serverThread. But some connections may not be closed, because the unnecessary "break" (at line 3816) breaks the loop after the first used and running connection and prevents other connections from being checked. The counter of open connections in this case will not decrease.