From 1bb7da6085613f71208350a59ae3175e2ee37ab7 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Tue, 14 Nov 2006 09:54:21 +0000
Subject: [PATCH] Added check against null SceneData to prevent crash with
 empty models

---
 src/osgViewer/SimpleViewer.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/osgViewer/SimpleViewer.cpp b/src/osgViewer/SimpleViewer.cpp
index 2e9d99fbe..169737bcd 100644
--- a/src/osgViewer/SimpleViewer.cpp
+++ b/src/osgViewer/SimpleViewer.cpp
@@ -165,7 +165,7 @@ void SimpleViewer::frameEventTraversal()
     
         bool handled = false;
         
-        if (_eventVisitor.valid())
+        if (_eventVisitor.valid() && getSceneData())
         {
             _eventVisitor->reset();
             _eventVisitor->addEvent( event );