From 24179afd283d218971752ee41c0fc7d6312998fb Mon Sep 17 00:00:00 2001
From: "Charles J. Cliffe" <cj@cubicproductions.com>
Date: Thu, 28 May 2015 18:30:53 -0400
Subject: [PATCH] add ternary to catch possible null pointer bump

---
 src/visual/ScopeCanvas.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/visual/ScopeCanvas.cpp b/src/visual/ScopeCanvas.cpp
index 4a5196a..c80cc54 100644
--- a/src/visual/ScopeCanvas.cpp
+++ b/src/visual/ScopeCanvas.cpp
@@ -61,7 +61,9 @@ void ScopeCanvas::OnPaint(wxPaintEvent& WXUNUSED(event)) {
     if (!wxGetApp().getAudioVisualQueue()->empty()) {
         AudioThreadInput *demodAudioData;
         wxGetApp().getAudioVisualQueue()->pop(demodAudioData);
-        int iMax = demodAudioData->data.size();
+
+        int iMax = demodAudioData?demodAudioData->data.size():0;
+
         if (demodAudioData && iMax) {
             if (waveform_points.size() != iMax * 2) {
                 waveform_points.resize(iMax * 2);