Fix active discovery
Fix active discovery

If we got host_ip and device from CM, we would not have the interface index
and received packets would be thrown away.

Passive discovery still worked.

Signed-off-by: Jens Georg <1d6e1cf70ec6f9ab28d3ea4b27a49a77654d370e@jensge.org>

GNOME/gssdp,GNOME/gssdp,GNOME/gssdp