From 26838c70d018f4927dcf8de3cf7d5fdeb60684e6 Mon Sep 17 00:00:00 2001
From: UndefinedOffset <echipman@webbuildersgroup.com>
Date: Wed, 29 Jun 2016 13:58:07 -0300
Subject: [PATCH] BUGFIX: Fixed issue where classes not in the sitemap would
 cause a crash

---
 code/controllers/GoogleSitemapController.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/code/controllers/GoogleSitemapController.php b/code/controllers/GoogleSitemapController.php
index c84c860..db06e2e 100644
--- a/code/controllers/GoogleSitemapController.php
+++ b/code/controllers/GoogleSitemapController.php
@@ -60,7 +60,7 @@ class GoogleSitemapController extends Controller
         $class = $this->unsanitiseClassName($this->request->param('ID'));
         $page = $this->request->param('OtherID');
 
-        if (GoogleSitemap::enabled() && $class && $page) {
+        if (GoogleSitemap::enabled() && $class && $page && ($class=='SiteTree' || GoogleSitemap::is_registered($class))) {
             Config::inst()->update('SSViewer', 'set_source_file_comments', false);
             
             $this->getResponse()->addHeader('Content-Type', 'application/xml; charset="utf-8"');