rem: this.makeBackup(); 
add: this.makeBackup(this.doWriteICS); 
context:     writeICS: function () {        this.locked = true;        if (!this.mUri)            throw Components.results.NS_ERROR_FAILURE;        // makeBackup will call doWriteICS        this.makeBackup();    },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/6acb1546ba8c47720f9e3a46e4ff2766b2b72ae0/calICSCalendar.js/buggy/calendar/providers/ics/calICSCalendar.js