xwm: postpone geometry dirtying from pending.opaque

Changing the opaque region has no immediate effect, therefore there is
no need to mark the view geometry dirty.

The view geometry will be invalidated automatically by the next commit
from Xwayland, in weston_surface_commit_state(). The dirtying did not
apply pending state.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>
1 file changed