Fix potential NPE in creating a date label

James Moger

2014-02-28 01ffd40bd6f2e5a970527862b93b4e611367c746

 src/main/java/com/gitblit/wicket/ExternalImage.java

@@ -27,6 +27,7 @@
      super(id, new Model<String>(url));

   }



   @Override

   protected void onComponentTag(ComponentTag tag) {

      super.onComponentTag(tag);

      checkComponentTag(tag, "img");