Fixes a "regression" where comically large FPS tests regressed.
Signed-off-by: Hans-Kristian Arntzen <post@arntzen-software.no>
Fixes: 19dba854 ("wsi/x11: Rewrite implementation to always use threads.")
Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30638>