From a8891ec0ca3d1b8e6d4f74e051b6e44fc5c4dc15 Mon Sep 17 00:00:00 2001
From: batrick <batrick@e0a8ed71-7df4-0310-8962-fdc924857419>
Date: Thu, 16 Jul 2009 03:43:23 +0000
Subject: [PATCH] If the old _index metamethod does not exist then do not use
 it. This would cause "attempt to index a nil value" errors when whatever is
 being made "strict" did not have a metatable (the global environment for
 example).

---
 nselib/strict.lua | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nselib/strict.lua b/nselib/strict.lua
index bcb88f545..a5c4e2bd5 100644
--- a/nselib/strict.lua
+++ b/nselib/strict.lua
@@ -60,7 +60,7 @@ function strict ()
     if type(_index) == "function" then
       local v = _index(t, n); -- hook it
       if v ~= nil then return v end
-    else
+    elseif _index ~= nil then
       local v = _index[n];
       if v ~= nil then return v end
     end