bugfix: empty_array can not work on Apple because csjon did not compare light userdata address with masked address (#82)

Since we used `json_lightudata_mask` when creating lightuserdata, same
mask should be applied when comparing the return of `touserdata`

Fixes #81.

1 files changed, 1 insertions, 1 deletions

diff --git a/lua_cjson.c b/lua_cjson.c
index ff61c47..df1794b 100644
--- a/lua_cjson.c
+++ b/lua_cjson.c
@@ -800,7 +800,7 @@ static void json_append_data(lua_State *l, json_config_t *cfg,
     case LUA_TLIGHTUSERDATA:
         if (lua_touserdata(l, -1) == NULL) {
             strbuf_append_mem(json, "null", 4);
-        } else if (lua_touserdata(l, -1) == &json_array) {
+        } else if (lua_touserdata(l, -1) == json_lightudata_mask(&json_array)) {
             json_append_array(l, cfg, current_depth, json, 0);
         }
         break;