From 9f0313dd0ba0def05a7ec6934faba9ad82e484f6 Mon Sep 17 00:00:00 2001
From: Mathias Froehlich <Mathias.Froehlich@web.de>
Date: Wed, 8 Jun 2011 13:42:30 +0200
Subject: [PATCH] Do not crash on exporting some EffectGeodes.

---
 simgear/scene/material/EffectGeode.cxx | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/simgear/scene/material/EffectGeode.cxx b/simgear/scene/material/EffectGeode.cxx
index eac2f156..26eab385 100644
--- a/simgear/scene/material/EffectGeode.cxx
+++ b/simgear/scene/material/EffectGeode.cxx
@@ -96,8 +96,11 @@ bool EffectGeode_writeLocalData(const Object& obj, osgDB::Output& fw)
 {
     const EffectGeode& eg = static_cast<const EffectGeode&>(obj);
 
-    fw.indent() << "effect\n";
-    fw.writeObject(*eg.getEffect());
+    if (eg.getEffect()) {
+        fw.indent() << "effect\n";
+        fw.writeObject(*eg.getEffect());
+    }
+
     return true;
 }
 
-- 
2.39.5