fix bug:proxy checker
fix bug:proxy checker

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