From 451cac457bab13a72e37972e320ca580f6ddf15a Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <c.oelckers@zdoom.fake>
Date: Fri, 26 Feb 2016 18:05:58 +0100
Subject: [PATCH] - added NULL pointer check in AActor::ClearInterpolation.

---
 src/r_defs.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/r_defs.h b/src/r_defs.h
index 18eba3b7b..6ad406eca 100644
--- a/src/r_defs.h
+++ b/src/r_defs.h
@@ -1289,7 +1289,8 @@ inline void AActor::ClearInterpolation()
 	PrevY = Y();
 	PrevZ = Z();
 	PrevAngle = angle;
-	PrevPortalGroup = Sector->PortalGroup;
+	if (Sector) PrevPortalGroup = Sector->PortalGroup;
+	else PrevPortalGroup = 0;
 }