[bisected] libcanberra's ca_context_playing() broken and always returning true
Commit 1d03923a broke libcanberra's
ca_context_playing(). A function which checks whether the context is currently playing. It now always returns TRUE after playing a sound once.
gnome-settings-daemon uses that to check whether it's playing the "volume change feedback" sound right now, here's what libcanberra does internally: http://git.0pointer.net/libcanberra.git/tree/src/pulse.c#n1316
This broke the functionality of skipping the volume-change feedback while we're playing something that got introduced with https://gitlab.gnome.org/GNOME/gnome-settings-daemon/-/merge_requests/145 and https://gitlab.gnome.org/GNOME/gnome-settings-daemon/-/merge_requests/173.