lxc_autostart: Update following shutdown() API change

src/lxc/lxc_autostart.c

@@ -280,11 +280,14 @@ int main(int argc, char *argv[])
 				if (my_args.list)
 					printf("%s\n", c->name);
 				else {
-					if (!c->shutdown(c, my_args.timeout))
+					if (!c->shutdown(c, my_args.timeout)) {
+						if (!c->stop(c)) {
 							fprintf(stderr, "Error shutting down container: %s\n", c->name);
 						}
 					}
 				}
+			}
+		}
 		else if (my_args.hardstop) {
 			/* Kill the container */
 			if (c->is_running(c)) {