lib/magento/Archive/Tar.php
protected function _destroyWriter()
    {
        if ($this->_writer instanceof Mage_Archive_Helper_File) {
            $this->_writer->close();
            $this->_writer = null;
        }

        return $this;
    }
protected function _destroyWriter()
    {
        if ($this->_writer instanceof Mage_Archive_Helper_File) {
            $this->_writer->close();
            $this->_writer = null;
        }

        return $this;
    }
protected function _destroyWriter ( ) { if ( $ this -> _writer instanceof Mage_Archive_Helper_File ) { $ this -> _writer -> close ( ) ; $ this -> _writer = null ; } return $ this ; }
Destroy tarball writer

@return Mage_Archive_Tar
Destroy tarball writer