From 1898a5fef8d4895c9b8e53b51083b03418c11f9d Mon Sep 17 00:00:00 2001
From: James Turner <zakalawe@mac.com>
Date: Thu, 19 Feb 2015 23:58:40 +0000
Subject: [PATCH] Guard against a crash Torsten encountered once.

---
 src/GUI/QtLauncher.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/GUI/QtLauncher.cxx b/src/GUI/QtLauncher.cxx
index 2f1e63445..6964eb9a4 100644
--- a/src/GUI/QtLauncher.cxx
+++ b/src/GUI/QtLauncher.cxx
@@ -930,7 +930,7 @@ void QtLauncher::onRun()
 
     if (m_ui->runwayRadio->isChecked()) {
         int index = m_ui->runwayCombo->currentData().toInt();
-        if (index >= 0) {
+        if ((index >= 0) && m_selectedAirport) {
             // explicit runway choice
             opt->addOption("runway", m_selectedAirport->getRunwayByIndex(index)->ident());
         }