ctdb-server: fix a possible fd leak in ctdb_tcp_listen_automatic()

sockets are created in a loop until an unused address is found.
But the unused socket fds were not closed.

Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Martin Schwenke <martin@meltin.net>

ctdb/tcp/tcp_connect.c

@@ -338,6 +338,8 @@ static int ctdb_tcp_listen_automatic(struct ctdb_context *ctdb)
 			DEBUG(DEBUG_ERR,(__location__ " Failed to bind() to socket. %s(%d)\n",
 					strerror(errno), errno));
 		}
+
+		close(ctcp->listen_fd);
 	}
 
 	if (i == ctdb->num_nodes) {