From 952cfa477fe1e02287c64bee90eec3c553f21baf Mon Sep 17 00:00:00 2001
From: Peter Westwood <westi@git.wordpress.org>
Date: Sun, 13 Dec 2009 11:43:19 +0000
Subject: [PATCH] Check that $user_id is set. For non-logged in users it is not
 set so we get a notice.

git-svn-id: https://develop.svn.wordpress.org/trunk@12389 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-includes/comment.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wp-includes/comment.php b/wp-includes/comment.php
index 98333d4265..81f317f06b 100644
--- a/wp-includes/comment.php
+++ b/wp-includes/comment.php
@@ -506,7 +506,7 @@ function wp_allow_comment($commentdata) {
 
 	do_action( 'check_comment_flood', $comment_author_IP, $comment_author_email, $comment_date_gmt );
 
-	if ( $user_id ) {
+	if ( isset($user_id) ) {
 		$userdata = get_userdata($user_id);
 		$user = new WP_User($user_id);
 		$post_author = $wpdb->get_var($wpdb->prepare("SELECT post_author FROM $wpdb->posts WHERE ID = %d LIMIT 1", $comment_post_ID));