bundles/systemd: systemd-timesyncd not showing offset is an error

bundles/systemd/files/check_timesyncd_sync

@@ -26,8 +26,8 @@ try:
     ).strip().decode()
 
     if not out:
-        print('NTP service is active, but could not get offset. This is probably fine.')
-        exit(0)
+        print('NTP service is active, but could not get offset. Something is wrong.')
+        exit(1)
 
     if out.startswith('+'):
         out = out[1:]