json-related refactor

src/logic/scripting/lua/libjson.cpp

@@ -25,10 +25,7 @@ static int l_json_stringify(lua_State* L) {
 static int l_json_parse(lua_State* L) {
     auto string = lua_tostring(L, 1);
     auto element = json::parse("<string>", string);
-    auto value = std::make_unique<dynamic::Value>(
-        dynamic::Map_sptr(element.release())
-    );
-    scripting::state->pushvalue(*value);
+    scripting::state->pushvalue(element);
     return 1;
 }