Fixes to coverity bugs:

72670: query_classifier/query_classifier.cc
72682: server/modules/filter/qlafilter.c
72679: server/modules/filter/tee.c
72716: server/modules/protocol/maxscaled.c
72694: server/modules/protocol/telnetd.c
71743: server/modules/routing/readwritesplit/readwritesplit.c

server/modules/protocol/maxscaled.c

@@ -270,6 +270,7 @@ int	n_connect = 0;
 			if (client_dcb == NULL)
 
 			{
+				close(so);
 				return n_connect;
 			}
                         client_dcb->fd = so;