Fix potential NPE when excluding last change author

James Moger

2014-10-13 70250d8ff53081eaccac24517ea96b89d27507b9

 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");