Also make sure fix.ypanstep is not zero before using it.
Also make sure fix.ypanstep is not zero before using it.

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