--- a/lua.c	Mon Apr 12 00:29:44 2010 +0300
+++ b/lua.c	Mon Apr 12 00:41:23 2010 +0300
@@ -1094,6 +1094,8 @@
 	lua_rawgeti (L, LUA_REGISTRYINDEX, cb -> nameref);
 	name = lua_tostring (L, -1);
 	cmd_del (name);
+	luaL_unref (L, LUA_REGISTRYINDEX, cb -> nameref);
+	cb -> nameref = LUA_NOREF;
 	lua_pop (L, 1);
 #endif
 }