# HG changeset patch
# User Drifter <rgr_02@comcast.net>
# Date 1338463927 14400
# Node ID 3c02fcf8af9bf1a423633d2548f79eee389cefc3
# Parent  99eb860fffb0650af5f03227040ae840b5a4da53
Fixed crash when passed bad ref in ReferenceToEntity (bug 5330, r=asherkin).

diff -r 99eb860fffb0 -r 3c02fcf8af9b core/HalfLife2.cpp
--- a/core/HalfLife2.cpp	Thu May 31 00:36:36 2012 -0400
+++ b/core/HalfLife2.cpp	Thu May 31 07:32:07 2012 -0400
@@ -832,6 +832,11 @@
 
 CBaseEntity *CHalfLife2::ReferenceToEntity(cell_t entRef)
 {
+	if (entRef == INVALID_EHANDLE_INDEX)
+	{
+		return NULL;
+	}
+
 	CEntInfo *pInfo = NULL;
 
 	if (entRef & (1<<31))
@@ -841,7 +846,7 @@
 		CBaseHandle hndl(hndlValue);
 
 		pInfo = LookupEntity(hndl.GetEntryIndex());
-		if (pInfo->m_SerialNumber != hndl.GetSerialNumber())
+		if (!pInfo || pInfo->m_SerialNumber != hndl.GetSerialNumber())
 		{
 			return NULL;
 		}