Initialize $extra member to empty array on ActivityObject

diff --git a/lib/activityobject.php b/lib/activityobject.php
index 61614935f1fa0ecb91f865a91f3a56e1b6b31638..5185d7761055951ab86a3cff18a8322c38384f25 100644 (file)
--- a/lib/activityobject.php
+++ b/lib/activityobject.php
@@ -105,6 +105,7 @@ class ActivityObject
     public $thumbnail;
     public $largerImage;
     public $description;
+    public $extra = array();
 
     /**
      * Constructor