event: don't disarm invalid timerfd

diff --git a/src/libsystemd-bus/sd-event.c b/src/libsystemd-bus/sd-event.c
index ec18af43d51f385d90ccef2bcaca8cf58bb48c02..90cdeda513b7a9239487b808d8f9ea35d533d639 100644 (file)
--- a/src/libsystemd-bus/sd-event.c
+++ b/src/libsystemd-bus/sd-event.c
@@ -1412,6 +1412,9 @@ static int event_arm_timer(
         a = prioq_peek(earliest);
         if (!a || a->enabled == SD_EVENT_OFF) {
 
+                if (timer_fd < 0)
+                        return 0;
+
                 if (*next == (usec_t) -1)
                         return 0;