fix incorrect game metadata logic in proxy

update

src/Episode3/DataIndexes.hh

@@ -1587,7 +1587,7 @@ private:
 
 class MapIndex {
 public:
-  MapIndex(const std::string& directory);
+  explicit MapIndex(const std::string& directory);
 
   class VersionedMap {
   public:

src/ProxyCommands.cc

@@ -1658,7 +1658,7 @@ static asio::awaitable<HandlerResult> S_64(shared_ptr<Client> c, Channel::Messag
   c->proxy_session->is_in_lobby = false;
   c->proxy_session->is_in_game = true;
   c->proxy_session->is_in_quest = false;
-  if constexpr (sizeof(cmd) > sizeof(S_JoinGame_DCNTE_64)) {
+  if constexpr (sizeof(*cmd) > sizeof(S_JoinGame_DCNTE_64)) {
     c->proxy_session->lobby_event = cmd->event;
     c->proxy_session->lobby_difficulty = cmd->difficulty;
     c->proxy_session->lobby_section_id = cmd->section_id;