From 6c8bcc5009e343d818f173446478a8aeaffabf1d Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Wed, 8 Jun 2016 12:19:53 +0100
Subject: [PATCH] Fixed unused parameter warning.

---
 examples/osgvolume/osgvolume.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/osgvolume/osgvolume.cpp b/examples/osgvolume/osgvolume.cpp
index e444db521..29efa4e3f 100644
--- a/examples/osgvolume/osgvolume.cpp
+++ b/examples/osgvolume/osgvolume.cpp
@@ -312,7 +312,7 @@ public:
         errorMessage(),
         maximumTextureSize(256) {}
 
-    virtual void operator () (osg::GraphicsContext* gc)
+    virtual void operator () (osg::GraphicsContext* /*gc*/)
     {
         OpenThreads::ScopedLock<OpenThreads::Mutex> lock(mutex);