fix undefined error
fix undefined error
syshk/commafeed,zhangzuoqiang/commafeed,Athou/commafeed,ebraminio/commafeed,RavenB/commafeed,Hubcapp/commafeed,ahmadassaf/CommaFeed-RSS-Reader,Hubcapp/commafeed,ahmadassaf/CommaFeed-RSS-Reader,Hubcapp/commafeed,ebraminio/commafeed,wesley1001/commafeed,syshk/commafeed,Athou/commafeed,ahmadassaf/CommaFeed-RSS-Reader,RavenB/commafeed,syshk/commafeed,wesley1001/commafeed,Hubcapp/commafeed,tlvince/commafeed,Athou/commafeed,ebraminio/commafeed,tlvince/commafeed,RavenB/commafeed,ahmadassaf/CommaFeed-RSS-Reader,RavenB/commafeed,tlvince/commafeed,ebraminio/commafeed,zhangzuoqiang/commafeed,wesley1001/commafeed,wesley1001/commafeed,tlvince/commafeed,zhangzuoqiang/commafeed,syshk/commafeed,zhangzuoqiang/commafeed,Athou/commafeed