kopper: Do not free the given screen in initScreen implementation
The given screen is already freed by the caller in case a NULL-pointer is returned by the implementation. Cc: mesa-stable Signed-off-by:Corentin Noël <corentin.noel@collabora.com> Reviewed-By:
Mike Blumenkrantz <michael.blumenkrantz@gmail.com> Part-of: <mesa/mesa!20933>