f11e0e76c6
If things progress fast enough, some state changes may not be seen be the waiting code. Fix by: 1. keeping a list of all the state changes 2. waiting checks each entry and if the relevant state is found, all states up to and including then are removed. This ensures that any waits will see all the state sets. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1664>