From 0a326e1bc8e806711051b92963a09f33d2d5b0e4 Mon Sep 17 00:00:00 2001
From: Spoike <acceptthis@users.sourceforge.net>
Date: Wed, 22 Feb 2006 23:46:22 +0000
Subject: [PATCH] Don't Crash!!! (This isn't a real fix)

git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@2008 fc73d0e0-1445-4013-8a0c-d673dee63da5
---
 engine/common/zone.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/engine/common/zone.c b/engine/common/zone.c
index 94cbdc58b..74dd262f4 100644
--- a/engine/common/zone.c
+++ b/engine/common/zone.c
@@ -1347,6 +1347,12 @@ cache_system_t *cache_head;
 void Cache_Free (cache_user_t *c)
 {
 	cache_system_t *cs;
+	if (c->data == NULL)
+	{
+		cache_head = NULL;	//this is evil and should never happen
+		Host_EndGame("Cache was already free\n");
+		return;
+	}
 	cs = ((cache_system_t *)c->data)-1;
 	cs = (cache_system_t*)((char*)cs - CACHEDEBUG);