Update setup_authentication.mkd

Anthony O.

2014-08-08 bdcb8d6d8c858e71f21a274654a41d6d5ab799fc

 src/main/java/com/gitblit/GitBlitServer.java

@@ -198,7 +198,9 @@
            e.printStackTrace();
         } finally {
            try {
               is.close();
               if (is != null) {
                  is.close();
               }
            } catch (IOException e) {
               e.printStackTrace();
            }