shared: Followups for #37575

src/shared/daemon-util.h

@@ -15,6 +15,7 @@ static inline const char* notify_start(const char *start, const char *stop) {
         return stop;
 }
 
+/* This is intended to be used with _cleanup_ attribute. */
 static inline void notify_on_cleanup(const char **p) {
         if (*p)
                 (void) sd_notify(false, *p);