main: fixed memleak

src/knot/main.c

@@ -271,6 +271,7 @@ int main(int argc, char **argv)
 			log_server_error("Failed to load configuration '%s'.\n",
 			                 config_fn);
 		}
+		free(daemon_root);
 		return do_cleanup(&server, config_fn, NULL);
 	} else {
 		log_server_info("Configured %d interfaces and %d zones.\n",