From 5c4af020d9dbcd66408c872c24adce41a104a8ea Mon Sep 17 00:00:00 2001
From: Randy Heit <rheit@zdoom.fake>
Date: Fri, 5 Mar 2010 03:43:51 +0000
Subject: [PATCH] - Fixed: CheckActorClass needed a NULL check.

SVN r2191 (trunk)
---
 src/p_acs.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/p_acs.cpp b/src/p_acs.cpp
index c899c5844..846b699eb 100644
--- a/src/p_acs.cpp
+++ b/src/p_acs.cpp
@@ -3284,8 +3284,8 @@ int DLevelScript::CallFunction(int argCount, int funcIndex, SDWORD *args)
 
 		case ACSF_CheckActorClass:
 		{
-			AActor *a = args[0] == 0 ? (AActor *)activator : SingleActorFromTID(args[0], NULL); 
-			return a->GetClass()->TypeName == FName(FBehavior::StaticLookupString(args[1]));
+			AActor *a = args[0] == 0 ? (AActor *)activator : SingleActorFromTID(args[0], NULL);
+			return a == NULL ? false : a->GetClass()->TypeName == FName(FBehavior::StaticLookupString(args[1]));
 		}
 
 		case ACSF_SoundSequenceOnActor: