From 9c103c8d646f3ddbbe528e9b0cd27183f1479ca2 Mon Sep 17 00:00:00 2001
From: Ryan Boren <ryan@git.wordpress.org>
Date: Fri, 21 Apr 2006 05:00:58 +0000
Subject: [PATCH] Make sure we have links to iterate over. fixes #2675

git-svn-id: https://develop.svn.wordpress.org/trunk@3734 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-admin/upgrade-functions.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wp-admin/upgrade-functions.php b/wp-admin/upgrade-functions.php
index ce7b89cfbc..0d08e3ab64 100644
--- a/wp-admin/upgrade-functions.php
+++ b/wp-admin/upgrade-functions.php
@@ -522,7 +522,7 @@ function upgrade_210() {
 
 		// Associate links to cats.
 		$links = $wpdb->get_results("SELECT link_id, link_category FROM $wpdb->links");
-		foreach ( $links as $link ) {
+		if ( !empty($links) ) foreach ( $links as $link ) {
 			$link_cat = $link_cat_id_map[$link->link_category];
 			$cat = $wpdb->get_row("SELECT * FROM $wpdb->link2cat WHERE link_id = '$link->link_id' AND category_id = '$link_cat'");
 			if (!$cat && 0 != $link->link_category) {