Move check_permissions() out of ajax_response(). see #15326.

git-svn-id: http://svn.automattic.com/wordpress/trunk@16991 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/admin-ajax.php

@@ -61,6 +61,7 @@ case 'fetch-list' :
 	if ( ! $wp_list_table )
 		die( '0' );
 
+	$wp_list_table->check_permissions();
 	$wp_list_table->ajax_response();
 
 	die( '0' );

wp-admin/includes/class-wp-list-table.php

@@ -816,7 +816,6 @@ class WP_List_Table {
 	 * @access public
 	 */
 	function ajax_response() {
-		$this->check_permissions();
 		$this->prepare_items();
 
 		extract( $this->_args );