From 4e92144e9e48b54e14a4a370d814b8d003420afa Mon Sep 17 00:00:00 2001
From: Jason <jie-email@jie-trancender.org>
Date: Fri, 3 Dec 2021 17:00:12 +0800
Subject: [PATCH] perf: using nil replace userdata: (nil) while decoding string
 which contains null

---
 lua_cjson.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/lua_cjson.c b/lua_cjson.c
index 22f33f12..fc5e117f 100644
--- a/lua_cjson.c
+++ b/lua_cjson.c
@@ -1253,9 +1253,7 @@ static void json_process_value(lua_State *l, json_parse_t *json,
         json_parse_array_context(l, json);
         break;;
     case T_NULL:
-        /* In Lua, setting "t[k] = nil" will delete k from the table.
-         * Hence a NULL pointer lightuserdata object is used instead */
-        lua_pushlightuserdata(l, NULL);
+        lua_pushnil(l);
         break;;
     default:
         json_throw_parse_error(l, json, "value", token);