From 2c60114a94403ff9b21581ab8c999305806c88be Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Thu, 9 Sep 2004 08:18:43 +0000
Subject: [PATCH] From Martin Aumueller, added ref() and unref() to Inventor
 node handling.

---
 src/osgPlugins/Inventor/ReaderWriterIV.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/osgPlugins/Inventor/ReaderWriterIV.cpp b/src/osgPlugins/Inventor/ReaderWriterIV.cpp
index f80520702..0a19756af 100644
--- a/src/osgPlugins/Inventor/ReaderWriterIV.cpp
+++ b/src/osgPlugins/Inventor/ReaderWriterIV.cpp
@@ -56,9 +56,12 @@ ReaderWriterIV::readNode(const std::string& file,
 
     if (rootIVNode)
     {
+        rootIVNode->ref();
         // Convert the inventor scenegraph to an osg scenegraph and return it
         ConvertFromInventor convertIV;
-        return convertIV.convert(rootIVNode);
+        ReadResult result = convertIV.convert(rootIVNode);
+        rootIVNode->unref();
+        return result;
     }
 
     return ReadResult::FILE_NOT_HANDLED;