From 4457df9a8ae60d6b85a0808da27e0c441fa75d0c Mon Sep 17 00:00:00 2001
From: scrawl <scrawl@baseoftrash.de>
Date: Fri, 20 Jan 2017 20:58:05 +0100
Subject: [PATCH] RemoveEmptyNodesVisitor: add missing isOperationPermissible
 check

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

diff --git a/src/osgUtil/Optimizer.cpp b/src/osgUtil/Optimizer.cpp
index 31854ebbf..4f442d4cd 100644
--- a/src/osgUtil/Optimizer.cpp
+++ b/src/osgUtil/Optimizer.cpp
@@ -1372,7 +1372,7 @@ void Optimizer::RemoveEmptyNodesVisitor::removeEmptyNodes()
                     strcmp(parent->className(),"MultiSwitch")!=0)
                 {
                     parent->removeChild(nodeToRemove.get());
-                    if (parent->getNumChildren()==0) newEmptyGroups.insert(*pitr);
+                    if (parent->getNumChildren()==0 && isOperationPermissibleForObject(parent)) newEmptyGroups.insert(parent);
                 }
             }
         }