fix downloader bug
fix downloader bug

king0222/neocrawler,ahkimkoo/neocrawler,ahkimkoo/neocrawler,veryci/neocrawler,thekillerdev/neocrawler,thekillerdev/neocrawler,king0222/neocrawler,king0222/neocrawler,ahkimkoo/neocrawler,veryci/neocrawler,thekillerdev/neocrawler