Call: make RCCs clear for non-video or non-audio capable clients
Call: make RCCs clear for non-video or non-audio capable clients

Signed-off-by: Jonny Lamb <3d1fb3642aaab2ff70e3392a5ab916bf99eed6a3@collabora.co.uk>

TelepathyIM/telepathy-spec,freedesktop-unofficial-mirror/telepathy__telepathy-spec