idirectfbsurfacewindow: fix for the case DSFLIP_BLIT and not DSFLIP_SWAP specified
idirectfbsurfacewindow: fix for the case DSFLIP_BLIT and not DSFLIP_SWAP specified

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