From cad3b73144c2ee82feb9659c130664baf9a1aa4d Mon Sep 17 00:00:00 2001
From: Peter Schlaile <peter@schlaile.de>
Date: Sun, 3 Aug 2008 15:35:56 +0000
Subject: [PATCH] == Sequencer ==

This fixes:
[#17413] Sequencer: Blender crashes pressing R on a color strip
---
 source/blender/src/editseq.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/source/blender/src/editseq.c b/source/blender/src/editseq.c
index 12019a9dab9..e9d0b57a166 100644
--- a/source/blender/src/editseq.c
+++ b/source/blender/src/editseq.c
@@ -644,6 +644,7 @@ static int seq_is_parent(Sequence *par, Sequence *seq)
 
 static int seq_is_predecessor(Sequence *pred, Sequence *seq)
 {
+	if (!pred) return 0;
 	if(pred == seq) return 0;
 	else if(seq_is_parent(pred, seq)) return 1;
 	else if(pred->seq1 && seq_is_predecessor(pred->seq1, seq)) return 1;