Fix for Mystique under PHP 8.1

In case anyone is still using this theme and wants it to work under PHP 8.x, the widget class constructor needs to be updated (generated by ChatGPT 4.0):

       // function Mystique_Widget() { - not PHP 8.0 compat
    function __construct() {

		/* Widget settings. */
		$widget_ops = array( 'classname' => 'mystique', 'description' => __( 'Displays your categories, tags, most commented posts and recent comments in a tabbed interface.', 'mystique' ) );

		/* Widget control settings. */
		$control_ops = array( 'width' => 300, 'height' => 350, 'id_base' => 'mystique-widget' );

		/* Create the widget. */
		// Old code not PHP 8.0 Compat - $this->WP_Widget( 'mystique-widget', __( 'Mystique Tabbed Widget', 'mystique' ), $widget_ops, $control_ops );
        parent::__construct( 'mystique-widget', __( 'Mystique Tabbed Widget', 'mystique' ), $widget_ops, $control_ops );
	}