Contact: don't wrongly mark Capabilities prepared
Contact: don't wrongly mark Capabilities prepared

This is the same hypothetical issue as fixed (and tested to be fixed)
for SimplePresence.

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