rem: if (aFeed && aFeed.downloadCallback) 
add: if (aFeed) 
context:   onParseError: function(aFeed)   {    if (aFeed && aFeed.downloadCallback)    {      if (aFeed.downloadCallback)        aFeed.downloadCallback.downloaded(aFeed, aFeed.request && aFeed.request.status == 304 ? kNewsBlogNoNewItems : kNewsBlogInvalidFeed);      FeedCache.removeFeed(aFeed.url);    }  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/9421/ba702cc9a4ef5a0d405c5d06db34bd358741be6f/Feed.js/clean/mail/extensions/newsblog/content/Feed.js