commands_utils: indicate taking ownership of state_client_fd in

src/lxc/commands_utils.c

@@ -171,7 +171,7 @@ int lxc_cmd_connect(const char *name, const char *lxcpath,
 	return client_fd;
 }
 
-int lxc_add_state_client(int state_client_fd, struct lxc_handler *handler,
+int lxc_add_state_client(__owns int state_client_fd, struct lxc_handler *handler,
 			 lxc_state_t states[MAX_STATE])
 {
 	__do_free struct lxc_state_client *newclient = NULL;

src/lxc/compiler.h

@@ -52,6 +52,9 @@
 #define __lxc_unused
 #endif
 
+/* Indicates taking ownership */
+#define __owns
+
 #define __cgfsng_ops
 
 #endif /* __LXC_COMPILER_H */