Fix got_sender_contact_by_id_cb error handling
Fix got_sender_contact_by_id_cb error handling

This bug was introduced by 5cc352873f102b6a43c2a95b71a9a2e5a38526ab

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