Ticket #23221: 23221.diff

wp-includes/link-template.php

@@ -2107 +2107 @@
         if ( ! is_multisite() )
                 return site_url($path, $scheme);
 
-        if ( 'relative' == $scheme )
-                $url = $current_site->path;
-        else
-                $url = set_url_scheme( 'http://' . $current_site->domain . $current_site->path, $scheme );
+        $url = trailingslashit( site_url( '', $scheme ) );
 
         if ( $path && is_string( $path ) )
                 $url .= ltrim( $path, '/' );