McdDispatchOperation: don't leak the handler that claimed the channels, if any
McdDispatchOperation: don't leak the handler that claimed the channels, if any

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