From 9fe0c23af4bd5773f3109a11e44087179ef448ec Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Wed, 29 Jun 2016 17:31:16 +0100
Subject: [PATCH] Added better handling of null istream

---
 src/osgPlugins/ive/DataInputStream.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/osgPlugins/ive/DataInputStream.cpp b/src/osgPlugins/ive/DataInputStream.cpp
index 3681bf476..ba281ad8e 100644
--- a/src/osgPlugins/ive/DataInputStream.cpp
+++ b/src/osgPlugins/ive/DataInputStream.cpp
@@ -159,8 +159,10 @@ DataInputStream::DataInputStream(std::istream* istream, const osgDB::ReaderWrite
         OSG_DEBUG << "ive::DataInputStream.setLoadExternalReferenceFiles()=" << getLoadExternalReferenceFiles() << std::endl;
     }
 
-    if(!istream){
+    if(!istream)
+    {
         throwException("DataInputStream::DataInputStream(): null pointer exception in argument.");
+        return;
     }
 
     endianType = readUInt() ;