[metacity] surface: update regions before is_region_empty

[Alberts Muktupāvels <muktupavels src gnome org>]

commit cdef273ad16cf1ecea2bf7e1f07d3f3e79a575d3
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Fri Oct 18 02:33:40 2019 +0300

    surface: update regions before is_region_empty

 src/compositor/meta-surface.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/src/compositor/meta-surface.c b/src/compositor/meta-surface.c
index d4036749..6c163542 100644
--- a/src/compositor/meta-surface.c
+++ b/src/compositor/meta-surface.c
@@ -714,15 +714,15 @@ meta_surface_pre_paint (MetaSurface *self)
 
   META_SURFACE_GET_CLASS (self)->pre_paint (self);
 
+  update_shape_region (self, damage);
+  update_opaque_region (self, damage);
+
   if (is_region_empty (priv->xdisplay, damage))
     {
       XFixesDestroyRegion (priv->xdisplay, damage);
       return;
     }
 
-  update_shape_region (self, damage);
-  update_opaque_region (self, damage);
-
   XFixesTranslateRegion (priv->xdisplay, damage, priv->x, priv->y);
   meta_compositor_add_damage (priv->compositor, "meta_surface_pre_paint", damage);
   XFixesDestroyRegion (priv->xdisplay, damage);