luatz/tzinfo: Fix accidental global

diff --git a/luatz/tzinfo.lua b/luatz/tzinfo.lua
index adaf1735dbf7c60049e44b3e553a9c05cb5fb2dd..75be0f11bb5f4eebc95008b3b190becce0524f76 100644 (file)
--- a/luatz/tzinfo.lua
+++ b/luatz/tzinfo.lua
@@ -2,10 +2,10 @@ local gettime = require "luatz.gettime".gettime
 local timetable_mt = require "luatz.timetable".timetable_mt
 
 local function to_timestamp ( o )
-       if type ( ts_local ) == "number" then
-               return ts_local
+       if type ( o ) == "number" then
+               return o
        elseif getmetatable ( o ) == timetable_mt then
-               return ts_local:timestamp ( )
+               return o:timestamp ( )
        end
 end