openid: Exit after showing error message.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@2167 44740490-163a-0410-bde0-09ae8108e29a

modules/openid/www/consumer.php

@@ -37,6 +37,7 @@ function displayError($message) {
 	$t->data['error'] = $message;
 	$t->data['AuthState'] = $authState;
 	$t->show();
+	exit(0);
 }