Error message for undefined variable when ncx not found

[chrsjrrtt]

Notice: Undefined variable: path in BookGluttonZipEpub.php on line 62

It appears that on that line it should be:
$this->log('ncx '.$this->opfroot . '/' . $this->ncxpath.' not located');
instead of
$this->log('ncx '.$path . '/' . $this->ncxpath.' not located');