From 91b7db31d10995a45c3ec1cec975462f540f9f99 Mon Sep 17 00:00:00 2001
From: Ted John <ted@brambles.org>
Date: Sun, 29 May 2016 10:56:36 +0100
Subject: [PATCH] fix #3771: Crash when kicking player

The game did not check if the user hash existed in the map before trying to remove it.
---
 src/network/NetworkUser.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/network/NetworkUser.cpp b/src/network/NetworkUser.cpp
index b9fe9e7d74..28ce006b76 100644
--- a/src/network/NetworkUser.cpp
+++ b/src/network/NetworkUser.cpp
@@ -184,7 +184,11 @@ void NetworkUserManager::UnsetUsersOfGroup(uint8 groupId)
 
 void NetworkUserManager::RemoveUser(const std::string &hash)
 {
-    _usersByHash[hash]->Remove = true;
+    NetworkUser * networkUser = GetUserByHash(hash);
+    if (networkUser != nullptr)
+    {
+        networkUser->Remove = true;
+    }
 }
 
 NetworkUser * NetworkUserManager::GetUserByHash(const std::string &hash)