Fixed signedness warning.
Fixed signedness warning.

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