waylandsink: Rename occurrences of GstWaylandSink to 'self'

Rename all occurrences to `self`, making it consintent with `GstWl*`
and `GstGtkWaylandsink`.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2694>
This commit is contained in:
Robert Mader 2022-06-30 11:48:45 +02:00 committed by GStreamer Marge Bot
parent f5c5f881e4
commit 062638a639

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