From 0ddada289722333b5075dfb48ffb20f45a14b20d Mon Sep 17 00:00:00 2001
From: Benau <Benau@users.noreply.github.com>
Date: Sat, 11 Feb 2017 14:42:24 +0800
Subject: [PATCH] Fix --track-debug crash

---
 src/tracks/check_line.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/tracks/check_line.cpp b/src/tracks/check_line.cpp
index f18ae1295..bc817dc53 100644
--- a/src/tracks/check_line.cpp
+++ b/src/tracks/check_line.cpp
@@ -140,6 +140,7 @@ void CheckLine::reset(const Track &track)
 // ----------------------------------------------------------------------------
 void CheckLine::resetAfterKartMove(unsigned int kart_index)
 {
+    if (m_previous_position.empty()) return;
     AbstractKart *kart = World::getWorld()->getKart(kart_index);
     m_previous_position[kart_index] = kart->getXYZ();
 }   // resetAfterKartMove