Log Message:
chat/loudmouth: fix a build breakage on non-x86 NetBSD archs

A build fix applied upstream some ten years ago for Mac OS X is only
really relevant for that OS, and was causing build breakages on NetBSD
with any archs that didn't happen to be covered in legacy code in
arpa/nameser_compat.h. (Encountered with powerpc, would also presumably
break others, like aarch64.) No PKGREVISION, build fix only.