Re: lib/libufs: build regressed after b366ee486

> It appears that your build environment does not have the b366ee486 version
> of /usr/src/sys/ufs/ffs/fs.h installed in /usr/include/ufs/ffs/fs.h.
> 
> That would normally happen after your did a buildworld and installworld.
> You should be able to fix your current compile failure by doing:
> 
> 	cp /usr/src/sys/ufs/ffs/fs.h /usr/include/ufs/ffs/fs.h.
> 
> Let me know if this fails to correct your problem.
> 
> 	Kirk McKusick

Thanks, Kirk.

I was bisecting local enironment, and my issue was related due to
dropping https://github.com/DankBSD/ports/commit/56cb9dc72 and
overriding sys.mk variables in make.conf instead, which led to
include bootstrap being skipped for some reason.