fix a regression introduced in 546c98c
fix a regression introduced in 546c98c

infernix/vagrant-libvirt,electrofelix/vagrant-libvirt,infernix/vagrant-libvirt,pradels/vagrant-libvirt,electrofelix/vagrant-libvirt,vagrant-libvirt/vagrant-libvirt,electrofelix/vagrant-libvirt,vagrant-libvirt/vagrant-libvirt,pradels/vagrant-libvirt,vagrant-libvirt/vagrant-libvirt,infernix/vagrant-libvirt