libegl: fix warnings
libegl: fix warnings

djbclark/directfb-core-DirectFB,sklnet/DirectFB,deniskropp/DirectFB,deniskropp/DirectFB,djbclark/directfb-core-DirectFB,sklnet/DirectFB,sklnet/DirectFB,jcdubois/DirectFB,deniskropp/DirectFB,deniskropp/DirectFB,lancebaiyouview/DirectFB,jcdubois/DirectFB,jcdubois/DirectFB,djbclark/directfb-core-DirectFB,lancebaiyouview/DirectFB,djbclark/directfb-core-DirectFB,lancebaiyouview/DirectFB,sklnet/DirectFB,lancebaiyouview/DirectFB