[MacPorts] #34204: avahi upgrade fails

[Marko Käning]

> If you have no_gtk in variants.conf you can probably just add "-gtk" as
> well.
How right you are… :-)

> I made the change because MacPorts has a preference to move away from
> "no_variant" style and instead setting "default_variants +variant".
Yes, I know.

Feel free to close my ticket then. Thanks that you were able to solve that so quickly for me, Brad. :-)