Auth_Default: Fix support for "Expire" from authentication sources.

Thanks to Tim Ace for reporting this bug!

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@3103 44740490-163a-0410-bde0-09ae8108e29a

lib/SimpleSAML/Auth/Default.php

@@ -91,7 +91,7 @@ class SimpleSAML_Auth_Default {
 		}
 
 		/* Add those that should always be included. */
-		foreach (array('Attributes', 'Expires', 'LogoutState', 'AuthnInstant') as $a) {
+		foreach (array('Attributes', 'Expire', 'LogoutState', 'AuthnInstant') as $a) {
 			if (isset($state[$a])) {
 				$persistentAuthState[$a] = $state[$a];
 			}