Don't bother with an idle call to poke a taken message into the queue.
Don't bother with an idle call to poke a taken message into the queue.

This avoids what we think is a potential ref leak when a message is
queued-for-queueing and then its channel is closed before it is actually
added to the queue by the idle callback.

incoming_target private member not used except for queue_pending, drop it
and pass as an explicit arg.

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