mcd_channel_init: make it explicit that the initial status is UNDISPATCHED
mcd_channel_init: make it explicit that the initial status is UNDISPATCHED

freedesktop-unofficial-mirror/telepathy__telepathy-mission-control,freedesktop-unofficial-mirror/telepathy__telepathy-mission-control,freedesktop-unofficial-mirror/telepathy__telepathy-mission-control,freedesktop-unofficial-mirror/telepathy__telepathy-mission-control