From bef12073029aaec7b19b5397195d850d7758791d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Petr=20S=CC=8Ckoda?= <commits@skodak.org>
Date: Wed, 21 Nov 2012 08:34:28 +0100
Subject: [PATCH] MDL-36211 prevent session problems in installer

---
 lib/dml/moodle_database.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/dml/moodle_database.php b/lib/dml/moodle_database.php
index 2983d155f41..6ffbcbeb25a 100644
--- a/lib/dml/moodle_database.php
+++ b/lib/dml/moodle_database.php
@@ -343,7 +343,9 @@ abstract class moodle_database {
         }
         // Always terminate sessions here to make it consistent,
         // this is needed because we need to save session to db before closing it.
-        session_get_instance()->write_close();
+        if (function_exists('session_get_instance')) {
+            session_get_instance()->write_close();
+        }
         $this->used_for_db_sessions = false;
 
         if ($this->temptables) {