[fusion] Don't return calls with zero serial, avoiding overhead when kernel calls or FCEF_ONEWAY is used.
[fusion] Don't return calls with zero serial, avoiding overhead when kernel calls or FCEF_ONEWAY is used.

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