dix: ignore barrier events in FixUpEventFromWindow

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jasper St. Pierre <jstpierre@mecheye.net>

dix/events.c

@@ -2436,6 +2436,8 @@ FixUpEventFromWindow(SpritePtr pSprite,
         case XI_DeviceChanged:
         case XI_HierarchyChanged:
         case XI_PropertyEvent:
+        case XI_BarrierHit:
+        case XI_BarrierLeave:
             return;
         default:
             break;