fix FillTriangle() for non 32bit modes
fix FillTriangle() for non 32bit modes

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