libsystemd: add missing _public_ attributes

src/libsystemd/sd-daemon/sd-daemon.c

@@ -667,7 +667,7 @@ _public_ int sd_notifyf(int unset_environment, const char *format, ...) {
         return sd_pid_notify(0, unset_environment, p);
 }
 
-int sd_pid_notifyf_with_fds(
+_public_ int sd_pid_notifyf_with_fds(
                 pid_t pid,
                 int unset_environment,
                 const int *fds, size_t n_fds,

src/libsystemd/sd-event/sd-event.c

@@ -1872,7 +1872,7 @@ _public_ int sd_event_add_exit(
         return 0;
 }
 
-int sd_event_trim_memory(void) {
+_public_ int sd_event_trim_memory(void) {
         int r;
 
         /* A default implementation of a memory pressure callback. Simply releases our own allocation caches