analyze: ignore dependencies with security --offline

We don't care about validating dependencies here, the security verb is
only checking the unit(s) under test.

src/analyze/analyze-security.c

@@ -2647,6 +2647,7 @@ static int offline_security_checks(char **filenames,
         const ManagerTestRunFlags flags =
                 MANAGER_TEST_RUN_MINIMAL |
                 MANAGER_TEST_RUN_ENV_GENERATORS |
+                MANAGER_TEST_RUN_IGNORE_DEPENDENCIES |
                 run_generators * MANAGER_TEST_RUN_GENERATORS;
 
         _cleanup_(manager_freep) Manager *m = NULL;

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

@@ -4154,7 +4154,7 @@ _public_ int sd_event_loop(sd_event *e) {
         assert_return(!event_pid_changed(e), -ECHILD);
         assert_return(e->state == SD_EVENT_INITIAL, -EBUSY);
 
-        _unused_ _cleanup_(sd_event_unrefp) sd_event *ref = NULL;
+        _unused_ _cleanup_(sd_event_unrefp) sd_event *ref = sd_event_ref(e);
 
         while (e->state != SD_EVENT_FINISHED) {
                 r = sd_event_run(e, UINT64_MAX);