CallChannel: Properly initialize properties.
CallChannel: Properly initialize properties.

freedesktop-unofficial-mirror/telepathy__telepathy-qt4-yell,freedesktop-unofficial-mirror/telepathy__telepathy-qt4-yell,mck182/telepathy-qt4-yell,mck182/telepathy-qt4-yell,freedesktop-unofficial-mirror/telepathy__telepathy-qt4-yell,mck182/telepathy-qt4-yell,freedesktop-unofficial-mirror/telepathy__telepathy-qt4-yell,mck182/telepathy-qt4-yell