@@ -1611,6 +1611,7 @@ def _build_attr_header(src_obj, src_relative_name,

     attrs = {}

     if cfg.preserve_attrs:

         for attr in cfg.preserve_attrs_list:

+            val = None

             if attr == 'uname':

                 try:

                     val = Utils.urlencode_string(Utils.getpwuid_username(src_obj['uid']), unicode_output=True)