Core: Add error handler for window object creation, e.g. OOM case.
Core: Add error handler for window object creation, e.g. OOM case.

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