Avoid NPE when the default branch cannot be identified

Robin Rosenberg

2013-09-01 02ede7f11c6fb28ca53fc240905cd1b140236f08

 src/main/java/com/gitblit/JsonServlet.java

@@ -123,6 +123,7 @@
         // Send JSON response

         String json = JsonUtils.toJsonString(o);

         response.setCharacterEncoding(Constants.ENCODING);

         response.setContentType("application/json");

         response.getWriter().append(json);

      }

   }