core: Fixed warning.
core: Fixed warning.

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