Typo

src/rc.ml

@@ -264,14 +264,14 @@ let init ?(rc=(!Const.rc_file)) () =
     initializer self#write
   end;;
 
-let create_setting = failwith "Not implemented"
+let create_setting () = failwith "Not implemented"
 (*
    (* Tools to create new tag *)
    class enpty_tag = object
    val
 *)
 
-let change_setting = failwith "Not implemented"
+let change_setting () = failwith "Not implemented"
 
 (* Empty entry *)
 let empty_entry () =