McdChannel: proxy_destroyed: make the debug messages clearer and more informative
McdChannel: proxy_destroyed: make the debug messages clearer and more informative

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