Actually fail if a parent window for the newly created one was specified.
Actually fail if a parent window for the newly created one was specified.

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