event: Trivial cleanup

We can avoid a lookup by simply checking if the alarm id
isn't NULL.
2 jobs for master in 6 minutes and 10 seconds (queued for 1 second)
Status Job ID Name Coverage
  Flatpak
passed #772526
flatpak
flatpak:master

00:05:29

 
  Deploy
passed #772527
flatpak:nightly

00:00:41