Ticket #26985: 26985.patch

wp-includes/link-template.php

@@ -2106 +2106 @@
  * @return string Includes url link with optional path appended.
 */
 function includes_url( $path = '', $scheme = null ) {
-        $url = site_url( '/' . WPINC . '/', $scheme );
+        $url = network_site_url( '/' . WPINC . '/', $scheme );
 
         if ( $path && is_string( $path ) )
                 $url .= ltrim($path, '/');