webrtcdatachannel: inherit directly from GObject
There's no reason for it to inherit from GstObject apart from locking, which is easily replaced, and inheriting from GInitiallyUnowned made introspection awkward and needlessly complicated.
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There's no reason for it to inherit from GstObject apart from locking, which is easily replaced, and inheriting from GInitiallyUnowned made introspection awkward and needlessly complicated.