criu service: support status-fd

Make the --status-fd option also work in 'criu service' mode to avoid
race conditions during testing.
Signed-off-by: Adrian Reber <areber@redhat.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

criu/cr-service.c

@@ -1206,6 +1206,9 @@ int cr_service(bool daemon_mode)
 	if (setup_sigchld_handler())
 		goto err;
 
+	if (close_status_fd())
+		return -1;
+
 	while (1) {
 		int sk;