From 08033794065d09c3195770dfd9bc9f397e39cdb2 Mon Sep 17 00:00:00 2001
From: stronk7 <stronk7>
Date: Sat, 3 Jun 2006 18:59:35 +0000
Subject: [PATCH] Avoid one notice in backup. Bug 5709.
 (http://moodle.org/bugs/bug.php?op=show&bugid=5709&)

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

diff --git a/backup/backup.php b/backup/backup.php
index 59b0d34d208..703e77b577b 100644
--- a/backup/backup.php
+++ b/backup/backup.php
@@ -117,7 +117,9 @@
     //Call the form, depending the step we are
     if (!$launch) {
         // if we're at the start, clear the cache of prefs
-        unset($SESSION->backupprefs[$course->id]);
+        if (isset($SESSION->backupprefs[$course->id])) {
+            unset($SESSION->backupprefs[$course->id]);
+        }
         include_once("backup_form.html");
     } else if ($launch == "check") {
         include_once("backup_check.html");