add: if (!this._outputStream) return; 
context:   registryKeyCreated: function(keyPath) {    this._writeLine(PREFIX_CREATE_REGISTRY_KEY + keyPath + " []");  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/be887b9ad2dd1a92372a5c74107897940edfaffa/nsPostUpdateWin.js/clean/toolkit/mozapps/update/src/nsPostUpdateWin.js