From 9ec89b99b13d98845e3de7ffcffdefb6d83f8c22 Mon Sep 17 00:00:00 2001
From: Joas Schilling <nickvergessen@owncloud.com>
Date: Mon, 7 Mar 2016 10:48:16 +0100
Subject: [PATCH] Correctly default to null and add type hint

---
 apps/dav/lib/carddav/carddavbackend.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/apps/dav/lib/carddav/carddavbackend.php b/apps/dav/lib/carddav/carddavbackend.php
index 687ef7f3a87..bfb6ea82ad7 100644
--- a/apps/dav/lib/carddav/carddavbackend.php
+++ b/apps/dav/lib/carddav/carddavbackend.php
@@ -78,7 +78,7 @@ class CardDavBackend implements BackendInterface, SyncSupport {
 	 */
 	public function __construct(IDBConnection $db,
 								Principal $principalBackend,
-								$dispatcher ) {
+								EventDispatcherInterface $dispatcher = null) {
 		$this->db = $db;
 		$this->principalBackend = $principalBackend;
 		$this->dispatcher = $dispatcher;