rem: var removedLogin = this.logins.splice(index, 1); 
add: var [removedLogin] = this.logins.splice(index, 1);  
context:     removeValueAt : function (index, removeFromDB) {        if (index < 0 || index >= this.logins.length)            throw "Index out of range.";        var removedLogin = this.logins.splice(index, 1);        this.matchCount--;        if (this.defaultIndex > this.logins.length)            this.defaultIndex--;        if (removeFromDB) {            var pwmgr = Cc["@mozilla.org/login-manager;1"]                            .getService(Ci.nsILoginManager);            pwmgr.removeLogin(removedLogin);        }    },
meta: 10520	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10520/a9e158100f0c4b7cf0ec290968f64edf0403a816/nsLoginManager.js/buggy/toolkit/components/passwordmgr/src/nsLoginManager.js