[InterNetNews/inn] 4adbe2: ovdb_init: Use setsid() only if available

[Julien ÉLIE]

  Branch: refs/heads/main
  Home:   https://github.com/InterNetNews/inn
  Commit: 4adbe22780cde1837274e1110c5b0aea47136fcb
      https://github.com/InterNetNews/inn/commit/4adbe22780cde1837274e1110c5b0aea47136fcb
  Author: Julien ÉLIE <Julien-Elie at users.noreply.github.com>
  Date:   2023-01-21 (Sat, 21 Jan 2023)

  Changed paths:
    M frontends/ovdb_init.c

  Log Message:
  -----------
  ovdb_init: Use setsid() only if available