From 3ec159ebe11eb0a5b7d015c2ed762f819577eb13 Mon Sep 17 00:00:00 2001
From: hondacrx <prelude_20032002@yahoo.com>
Date: Tue, 6 Feb 2024 16:00:34 -0500
Subject: [PATCH] Core/Players: fixed a possible crash in
 SendInitialPacketsBeforeAddToMap when uninstanced maps don't have a valid
 MapDifficulty entry

Port From (https://github.com/TrinityCore/TrinityCore/commit/924efc89b2668d390bf768ccd936cc67e4a77f5d)
---
 Source/Game/Entities/Player/Player.cs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Source/Game/Entities/Player/Player.cs b/Source/Game/Entities/Player/Player.cs
index d6036a0af..01b027b98 100644
--- a/Source/Game/Entities/Player/Player.cs
+++ b/Source/Game/Entities/Player/Player.cs
@@ -5565,7 +5565,9 @@ namespace Game.Entities
 
             // SMSG_WORLD_SERVER_INFO
             WorldServerInfo worldServerInfo = new();
-            worldServerInfo.InstanceGroupSize = GetMap().GetMapDifficulty().MaxPlayers;         // @todo
+            var mapDifficulty = GetMap().GetMapDifficulty();
+            if (mapDifficulty != null)
+                worldServerInfo.InstanceGroupSize = mapDifficulty.MaxPlayers;
             worldServerInfo.IsTournamentRealm = false;             // @todo
             worldServerInfo.RestrictedAccountMaxLevel = null; // @todo
             worldServerInfo.RestrictedAccountMaxMoney = null; // @todo