_tp_asv_to_vardict: use _tp_boxed_to_variant()
_tp_asv_to_vardict: use _tp_boxed_to_variant()

https://bugs.freedesktop.org/show_bug.cgi?id=30422

Distrotech/telepathy-glib,Distrotech/telepathy-glib,Distrotech/telepathy-glib,Distrotech/telepathy-glib,Distrotech/telepathy-glib