From 761cbf9a8ae378c0b96550d9163d556343b2eb2f Mon Sep 17 00:00:00 2001
From: peace-maker <peace-maker@wcfan.de>
Date: Sat, 11 Mar 2017 09:54:38 -0700
Subject: [PATCH] Fix crash when accessing gamerules during mapchange (#593)

If the gamerules proxy entity doesn't exist, don't try to generate the
reference for it.
---
 extensions/sdktools/gamerulesnatives.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/extensions/sdktools/gamerulesnatives.cpp b/extensions/sdktools/gamerulesnatives.cpp
index 9fac96f66..195a2a7b9 100644
--- a/extensions/sdktools/gamerulesnatives.cpp
+++ b/extensions/sdktools/gamerulesnatives.cpp
@@ -70,7 +70,8 @@ static CBaseEntity* GetGameRulesProxyEnt()
 	if (proxyEntRef == -1 || (pProxy = gamehelpers->ReferenceToEntity(proxyEntRef)) == NULL)
 	{
 		pProxy = FindEntityByNetClass(playerhelpers->GetMaxClients(), g_szGameRulesProxy);
-		proxyEntRef = gamehelpers->EntityToReference(pProxy);
+		if (pProxy)
+			proxyEntRef = gamehelpers->EntityToReference(pProxy);
 	}
 	
 	return pProxy;