egl/wayland: validate dri_screen_display_gpu before use

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Eric Engestrom <eric@igalia.com>
Reviewed-by: Simon Ser <contact@emersion.fr>
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/12370
Fixes: d795b4712cb ("egl/wayland: only supply LINEAR modifier when supported")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33036>
1 file changed