for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
dispose_cache_job_info (pixbuf_cache->prev_job + i, pixbuf_cache);
dispose_cache_job_info (pixbuf_cache->next_job + i, pixbuf_cache);
for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
dispose_cache_job_info (pixbuf_cache->prev_job + i, pixbuf_cache);
dispose_cache_job_info (pixbuf_cache->next_job + i, pixbuf_cache);