rem: this.mZipReader.init(aFile); this.mZipReader.open(); 
add: this.mZipReader.open(aFile); 
context: function zipExtractor(aFile) {  this.mZipReader = Components.classes["@mozilla.org/libjar/zip-reader;1"].    createInstance(nsIZipReader);  this.mZipReader.init(aFile);  this.mZipReader.open();  this.mZipReader.test(null);}
meta: 5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5459/7948b502f609446d8458aaf3518237fff2740eb5/nsXULAppInstall.js/buggy/xulrunner/setup/nsXULAppInstall.js