rem: if (!interfaces.some( function(v) { return iid.equals(v) } )) 
add: logins.some(function(l) { existingLogin = l; return (l.username == username); }); 
context:             if (!interfaces.some( function(v) { return iid.equals(v) } ))
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/9421/51a5a07555ca3e475053b9a0f62d11a948ba95a9/nsLoginManager.js/buggy/toolkit/components/passwordmgr/src/nsLoginManager.js