Yeah, it's ugly. But it's the minimal change that doesn't break anything
else.

(cherry picked from commit 4017fdc)

I still think that change needs to be reverted, but if there's no will
for that let's at the very least warn users about the problem that change
introduced. Without this most ALSA users switching from releases
before 18.03 will get sound, but won't get ALSA state save/restore.
That would be very confusing.

All modules and tests that want to be completely headless disable this
option explicitly. I.e. you won't see this warning unless you are
affected.

(cherry picked from commit 26934c3)