Ticket #14842: 14842.diff

wp-includes/capabilities.php

@@ -1213 +1213 @@
  * @return bool True if the user is a site admin.
  */
 function is_super_admin( $user_id = false ) {
-        if ( ! $user_id ) {
-                $current_user = wp_get_current_user();
-                $user_id = ! empty($current_user) ? $current_user->id : 0;
-        }
+        global $site_admins;
 
-        if ( ! $user_id )
+        if ( $user_id )
+                $user = new WP_User( $user_id );
+        else
+                $user = wp_get_current_user();
+
+        if ( empty( $user->id ) )
                 return false;
 
-        $user = new WP_User($user_id);
-
         if ( is_multisite() ) {
                 $super_admins = get_super_admins();
                 if ( is_array( $super_admins ) && in_array( $user->user_login, $super_admins ) )