ExampleCallStream: defer setting stream direction until constructed
ExampleCallStream: defer setting stream direction until constructed

Otherwise, we'll potentially emit signals etc. before everything is set
up, and in particular before we know the self-handle.

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