Avoid crash when receiving SMSG_MAP_MASK without Game instance

It happened to me a few times. Needs checking whether we could instead
make sure we always have a Game instance when receiving this message,
because this way a map mask might get ignored.

Or maybe the map mask just needs to be stored elsewhere.

1 files changed, 3 insertions, 2 deletions

diff --git a/src/net/tmwa/playerhandler.cpp b/src/net/tmwa/playerhandler.cpp
index f704576e..9c1a7135 100644
--- a/src/net/tmwa/playerhandler.cpp
+++ b/src/net/tmwa/playerhandler.cpp
@@ -516,8 +516,9 @@ void PlayerHandler::handleMessage(MessageIn &msg)
             {
                 const int mask = msg.readInt32();
                 msg.readInt32();  // unused
-                if (Map *map = Game::instance()->getCurrentMap())
-                    map->setMask(mask);
+                if (auto game = Game::instance())
+                    if (Map *map = game->getCurrentMap())
+                        map->setMask(mask);
             }
             break;
     }