Fixed bug in fs_buffer_mixto(): must return DFB_BUFFEREMPTY either when the amount of max_samples is equal to the amount of remaining samples.
Fixed bug in fs_buffer_mixto(): must return DFB_BUFFEREMPTY either when
the amount of max_samples is equal to the amount of remaining samples.

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