From: Mikko Rasa <tdb@tdb.fi>
Date: Fri, 9 Aug 2013 10:31:28 +0000 (+0300)
Subject: Fix a crash when reversing certain TrackOffsetIters
X-Git-Url: http://git.tdb.fi/?a=commitdiff_plain;h=2314cc760b726c5aa0e697c82f3a9051784e0706;p=r2c2.git

Fix a crash when reversing certain TrackOffsetIters
---

diff --git a/source/libr2c2/trackoffsetiter.cpp b/source/libr2c2/trackoffsetiter.cpp
index d23b4d7..01fd580 100644
--- a/source/libr2c2/trackoffsetiter.cpp
+++ b/source/libr2c2/trackoffsetiter.cpp
@@ -118,6 +118,9 @@ TrackOffsetIter TrackOffsetIter::reverse() const
 
 	int p = (_path>=0 ? _path : _track->get_active_path());
 	TrackIter t = _track.reverse(p);
+	if(!t)
+		return TrackOffsetIter();
+
 	float o = t->get_type().get_path_length(p)-_offset;
 
 	return TrackOffsetIter(t, p, o);