Fix potential NPE on getting Markdown content

James Moger

2013-12-30 59593af9a3d2f8ac30ecac084cdd1168f8ed2a9d

 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");