qnetd: Return error code based on ipc closed

So restore pre pr-poll-loop behavior.

Signed-off-by: Jan Friesse <jfriesse@redhat.com>

qdevices/corosync-qnetd.c

@@ -169,7 +169,7 @@ qnetd_run_main_loop(struct qnetd_instance *instance)
 		return (-1);
 	}
 
-	return (poll_res);
+	return (qnetd_ipc_is_closed(instance) ? 0 : -1);
 }
 
 static void