fixed nasty off-by-one bug
fixed nasty off-by-one bug

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