static void
sweep_line_fini (sweep_line_t *sweep)
{
    _cairo_freepool_fini (&sweep->coverage.pool);
    pqueue_fini (&sweep->stop);

    if (sweep->spans != sweep->spans_stack)
	free (sweep->spans);
}
static void
_cairo_bo_event_queue_fini (cairo_bo_event_queue_t *event_queue)
{
    _pqueue_fini (&event_queue->pqueue);
    _cairo_freepool_fini (&event_queue->pool);
}