From d81542752a2c3e637ab1bddb1a6bc8a086ca687b Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <coelckers@zdoom.fake>
Date: Mon, 9 Apr 2012 09:01:25 +0000
Subject: [PATCH] - fixed: P_FindFloorCeiling may not use the floorsector
 returned by P_LineOpening when only checking 3D-floors because it will be
 NULL.

SVN r3547 (trunk)
---
 src/p_map.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/p_map.cpp b/src/p_map.cpp
index 9f8cc6271..92b2cb035 100644
--- a/src/p_map.cpp
+++ b/src/p_map.cpp
@@ -149,7 +149,7 @@ static bool PIT_FindFloorCeiling (line_t *ld, const FBoundingBox &box, FCheckPos
 	if (open.bottom > tmf.floorz)
 	{
 		tmf.floorz = open.bottom;
-		tmf.floorsector = open.bottomsec;
+		if (open.bottomsec != NULL) tmf.floorsector = open.bottomsec;
 		tmf.touchmidtex = open.touchmidtex;
 		tmf.abovemidtex = open.abovemidtex;
 	}