conf: Use VIR_AUTOUNREF in domain_conf
conf: Use VIR_AUTOUNREF in domain_conf

Let's make use of the auto __cleanup capabilities for virObjectUnref
consumers.

Signed-off-by: John Ferlan <87558058f6f829e5ec976c8ef960720af4ff9c7d@redhat.com>

jfehlig/libvirt,crobinso/libvirt,olafhering/libvirt,nertpinx/libvirt,libvirt/libvirt,andreabolognani/libvirt,eskultety/libvirt,fabianfreyer/libvirt,jfehlig/libvirt,nertpinx/libvirt,zippy2/libvirt,andreabolognani/libvirt,olafhering/libvirt,libvirt/libvirt,libvirt/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,fabianfreyer/libvirt,fabianfreyer/libvirt,zippy2/libvirt,zippy2/libvirt,libvirt/libvirt,crobinso/libvirt,zippy2/libvirt,andreabolognani/libvirt,nertpinx/libvirt,jardasgit/libvirt,eskultety/libvirt,crobinso/libvirt,andreabolognani/libvirt,eskultety/libvirt,olafhering/libvirt,jfehlig/libvirt,jardasgit/libvirt,fabianfreyer/libvirt,nertpinx/libvirt,olafhering/libvirt,jardasgit/libvirt,andreabolognani/libvirt,eskultety/libvirt,jardasgit/libvirt,eskultety/libvirt,crobinso/libvirt,nertpinx/libvirt,jfehlig/libvirt