local_unbound segfaults at boot

I believe the problem of local_unbound segfaulting began after I compiled
the source after the large commit to unbound on Saturday, May 12, 2018
(about 3 weeks ago).

I assumed the problem was probably common if I was experiencing it, but
I've seen no other mentions of it. I'm not sure what info I need to
provide, but will do so upon request.