Extra quotation mark inside <small>

The "comment by" text is the same size as everything else, while the code shows it was intended to be smaller. In theme_guestbook_entry_comment:

$output .= '<small">'. t('Comment by') .' '. $commentby ."</small><br />";

Should be:

$output .= '<small>'. t('Comment by') .' '. $commentby ."</small><br />";