security_util: Use more VIR_AUTOFREE()
security_util: Use more VIR_AUTOFREE()

Signed-off-by: Michal Privoznik <83d82aaba2eed257f4814b0c239c260c4caaadf0@redhat.com>
Reviewed-by: Jiri Denemark <62bdf77dc47919a4d59a91822129d14633cfca81@redhat.com>

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