Philipp Zabel authored May 11, 2021 and Pekka Paalanen committed Jun 10, 2022

Stop plugins from overwriting the struct weston_output::destroy vfunc,
as that will be used by backends to recognize their outputs.
Instead, pass a plugin-specific destroy callback when creating the
virtual output.

See: #268



Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>