util.json: Make setmetatable local.

diff --git a/util/json.lua b/util/json.lua
index 67276765b44846fa4a846fac70829d75ae3f2a5b..0ce315b2a47b07d73bd3c28d3e5ebc55af64a2bc 100644 (file)
--- a/util/json.lua
+++ b/util/json.lua
@@ -13,7 +13,7 @@ local tostring, tonumber = tostring, tonumber;
 local pairs, ipairs = pairs, ipairs;
 local next = next;
 local error = error;
-local newproxy, getmetatable = newproxy, getmetatable;
+local newproxy, getmetatable, setmetatable = newproxy, getmetatable, setmetatable;
 local print = print;
 
 local has_array, array = pcall(require, "util.array");