[draw] Call backup clip region consistently "old_clip" to avoid further errors.
[draw] Call backup clip region consistently "old_clip" to avoid further errors.

kevleyski/directfb,djbclark/directfb-core-DirectFB,deniskropp/DirectFB,kevleyski/DirectFB-1,jcdubois/DirectFB,lancebaiyouview/DirectFB,lancebaiyouview/DirectFB,Distrotech/DirectFB,lancebaiyouview/DirectFB,deniskropp/DirectFB,kevleyski/directfb,deniskropp/DirectFB,lancebaiyouview/DirectFB,mtsekm/test,kevleyski/DirectFB-1,Distrotech/DirectFB,sklnet/DirectFB,kaostao/directfb,sklnet/DirectFB,sklnet/DirectFB,kaostao/directfb,jcdubois/DirectFB,Distrotech/DirectFB,deniskropp/DirectFB,kevleyski/directfb,djbclark/directfb-core-DirectFB,mtsekm/test,jcdubois/DirectFB,kevleyski/DirectFB-1,dfbdok/DirectFB1,mtsekm/test,kevleyski/DirectFB-1,kevleyski/directfb,djbclark/directfb-core-DirectFB,DirectFB/directfb,DirectFB/directfb,DirectFB/directfb,kaostao/directfb,djbclark/directfb-core-DirectFB,dfbdok/DirectFB1,sklnet/DirectFB,dfbdok/DirectFB1