[InterNetNews/inn] b14ab8: blacklistd: Fix build on NetBSD

[Julien ÉLIE]

  Branch: refs/heads/main
  Home:   https://github.com/InterNetNews/inn
  Commit: b14ab88a776ef2c3bf7593c6996e3d03dab93506
      https://github.com/InterNetNews/inn/commit/b14ab88a776ef2c3bf7593c6996e3d03dab93506
  Author: Julien ÉLIE <Julien-Elie at users.noreply.github.com>
  Date:   2022-06-04 (Sat, 04 Jun 2022)

  Changed paths:
    M nnrpd/perm.c

  Log Message:
  -----------
  blacklistd: Fix build on NetBSD

BLACKLIST_AUTH_OK and BLACKLIST_AUTH_FAIL are not defined in NetBSD
(at least NetBSD 9.2), contrary to FreeBSD.

Add them so as to fix the build on systems not defining them.

close #234