From 107d80fd95fd56861860595f06a850e562473dc0 Mon Sep 17 00:00:00 2001
From: wpmuguru <wpmuguru@1a063a9b-81f0-0310-95a4-ce76da25c4cd>
Date: Fri, 12 Feb 2010 17:37:17 +0000
Subject: [PATCH] add siteurl site option for MU upgrade, See #11644

git-svn-id: http://svn.automattic.com/wordpress/trunk@13067 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-admin/includes/upgrade.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/wp-admin/includes/upgrade.php b/wp-admin/includes/upgrade.php
index 3bdda13470..f58f84a583 100644
--- a/wp-admin/includes/upgrade.php
+++ b/wp-admin/includes/upgrade.php
@@ -1099,6 +1099,8 @@ function upgrade_290() {
  */
 function upgrade_300() {
 	populate_roles_300();
+	if ( is_multisite() && is_main_site() && ! defined( 'MULTISITE' ) && get_site_option( 'siteurl' ) === false ) 
+		add_site_option( 'siteurl', '' );
 }
 
 /**