Fix driver when using session storage for prefs

diff --git a/framework/Core/lib/Horde/Core/Factory/Prefs.php b/framework/Core/lib/Horde/Core/Factory/Prefs.php
index 5842159..c18ed05 100644 (file)
--- a/framework/Core/lib/Horde/Core/Factory/Prefs.php
+++ b/framework/Core/lib/Horde/Core/Factory/Prefs.php
@@ -110,6 +110,7 @@ class Horde_Core_Factory_Prefs
                 break;
 
             case 'Horde_Prefs_Storage_Session':
+                $driver = 'Horde_Prefs_Storage_Null';
                 $opts['cache'] = false;
                 break;