From 2221e2df72e3ec2ee593868408a685e635e1dca6 Mon Sep 17 00:00:00 2001
From: Bob Vincent <bobvin@pillars.net>
Date: Sat, 13 Oct 2012 08:38:43 -0400
Subject: [PATCH 2/2] Issue #1811820: Do not call node_tag_new() on nonexistent nodes.

---
 ajax/authcache.php |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/ajax/authcache.php b/ajax/authcache.php
index 853e0ba..d138308 100644
--- a/ajax/authcache.php
+++ b/ajax/authcache.php
@@ -134,8 +134,13 @@ function _authcache_form_token_id($vars) {
 function _authcache_node_history($nid) {
   include_once './modules/node/node.module';
 
+  // Do not tag nonexistent nodes.
+  if (empty($node = node_load($nid))) {
+    return;
+  }
+
   // Update the 'last viewed' timestamp of the specified node for current user.
-  node_tag_new($nid);
+  node_tag_new($node);
 
   // Retrieves the timestamp at which the current user last viewed the specified node
   return node_last_viewed($nid);
-- 
1.7.1