libs/nixio: d'oh ... import tostring() as well

diff --git a/libs/nixio/lua/nixio/util.lua b/libs/nixio/lua/nixio/util.lua
index bce4ce2..401ec61 100644 (file)
--- a/libs/nixio/lua/nixio/util.lua
+++ b/libs/nixio/lua/nixio/util.lua
@@ -14,7 +14,8 @@ $Id$
 
 local table = require "table"
 local nixio = require "nixio"
-local getmetatable, assert, pairs, type = getmetatable, assert, pairs, type
+local getmetatable, assert, pairs, type, tostring =
+       getmetatable, assert, pairs, type, tostring
 
 module "nixio.util"