Prevent deadlock in TestPersistableChannelQueue (#17717)
Prevent deadlock in TestPersistableChannelQueue (#17717)

* Prevent deadlock in TestPersistableChannelQueue

There is a potential deadlock in TestPersistableChannelQueue due to attempting to
shutdown the test queue before it is ready.

Signed-off-by: Andrew Thornton <6a547fdd28db89120bdd70d4af1f9ba672ccd43a@cantab.net>

* prevent npe

Signed-off-by: Andrew Thornton <6a547fdd28db89120bdd70d4af1f9ba672ccd43a@cantab.net>
go-gitea/gitea,go-gitea/gitea,go-gitea/gitea