Index: wp-admin/includes/class-wp-list-table-compat.php
===================================================================
--- wp-admin/includes/class-wp-list-table-compat.php	(revision 44962)
+++ wp-admin/includes/class-wp-list-table-compat.php	(working copy)
@@ -16,6 +16,10 @@
 	public $_screen;
 	public $_columns;
 
+	/**
+	 * @param string|object $screen
+	 * @param array $columns
+	 */
 	public function __construct( $screen, $columns = array() ) {
 		if ( is_string( $screen ) ) {
 			$screen = convert_to_screen( $screen );