bug#36903: 27.0.50; gnus registry vs. debbugs

[Eric Abrahamsen]

Eric Abrahamsen <eric@ericabrahamsen.net> writes:

> Michael Heerdegen <michael_heerdegen@web.de> writes:
>
>> Michael Heerdegen <michael_heerdegen@web.de> writes:
>>
>>> FWIW, your fix works for me.
>>
>> Though, today I got this:
>
> Right -- the registry shutdown should also run
> gnus-registry-unload-hook. Let me play with this and test a bit, and
> push it if all seems well.

Just pushed a commit that does this. The nice thing is, the unload-hook
sets gnus-registry-enabled to nil, which is a better (less
implementation-specific) test for whether we can rely on the registry
being present or not.