Use g_cancellable_connect
Use g_cancellable_connect

We don't use g_cancellable_disconnect for now because it raises a
deadlock in our code (#587300)

freedesktop-unofficial-mirror/wocky,freedesktop-unofficial-mirror/wocky,freedesktop-unofficial-mirror/wocky,noonien-d/wocky,noonien-d/wocky,noonien-d/wocky