Merge pull request #13884 from poettering/event-fd-close-fix

sd-event: don't invalidate source type on disconnect

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

@@ -771,11 +771,13 @@ static void source_disconnect(sd_event_source *s) {
 
         event = s->event;
 
-        s->type = _SOURCE_EVENT_SOURCE_TYPE_INVALID;
         s->event = NULL;
         LIST_REMOVE(sources, event->sources, s);
         event->n_sources--;
 
+        /* Note that we don't invalidate the type here, since we still need it in order to close the fd or
+         * pidfd associated with this event source, which we'll do only on source_free(). */
+
         if (!s->floating)
                 sd_event_unref(event);
 }