McdAccount: if we have no McdConnection, set status DISCONNECTED
McdAccount: if we have no McdConnection, set status DISCONNECTED

Otherwise, reconnecting doesn't work at all, even in simple cases.

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