From d18ce728c02c1f94b6353c5671115f4cce5dca77 Mon Sep 17 00:00:00 2001
From: Marco Serantoni <marco.serantoni@gmail.com>
Date: Sat, 18 Dec 2010 10:26:01 +0100
Subject: [PATCH] Patch from Craig Cross - fix to spurious event handling of
 wx-2.8

---
 pcbnew/editrack.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pcbnew/editrack.cpp b/pcbnew/editrack.cpp
index a0e0ed1fef..ecb7ddd6e0 100644
--- a/pcbnew/editrack.cpp
+++ b/pcbnew/editrack.cpp
@@ -686,6 +686,9 @@ void ShowNewTrackWhenMovingCursor( WinEDA_DrawPanel* panel,
     DisplayOpt.DisplayPcbTrackFill = true;
     int       showTrackClearanceMode = DisplayOpt.ShowTrackClearanceMode;
 
+    if (g_FirstTrackSegment == NULL)
+        return;
+
     NETCLASS* netclass = g_FirstTrackSegment->GetNetClass();
 
     if( showTrackClearanceMode != DO_NOT_SHOW_CLEARANCE )