Added explicit initialization of osg::Referenced(true) to osg::Operation subclasses as it uses virtual inhertiance from osg::Referenced.

git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/branches/OpenSceneGraph-3.4@15024 16af8721-9629-0410-8352-f15c8da7e697

src/osgUtil/GLObjectsVisitor.cpp

@@ -181,12 +181,14 @@ void GLObjectsVisitor::apply(osg::StateSet& stateset)
 //
 
 GLObjectsOperation::GLObjectsOperation(GLObjectsVisitor::Mode mode):
+    osg::Referenced(true),
     osg::GraphicsOperation("GLObjectOperation",false),
     _mode(mode)
 {
 }
 
 GLObjectsOperation::GLObjectsOperation(osg::Node* subgraph, GLObjectsVisitor::Mode mode):
+    osg::Referenced(true),
     osg::GraphicsOperation("GLObjectOperation",false),
     _subgraph(subgraph),
     _mode(mode)

src/osgUtil/IncrementalCompileOperation.cpp

@@ -445,6 +445,7 @@ bool IncrementalCompileOperation::CompileSet::compile(CompileInfo& compileInfo)
 // IncrementalCompileOperation
 //
 IncrementalCompileOperation::IncrementalCompileOperation():
+    osg::Referenced(true),
     osg::GraphicsOperation("IncrementalCompileOperation",true),
     _flushTimeRatio(0.5),
     _conservativeTimeRatio(0.5),

src/osgUtil/RenderStage.cpp

@@ -1122,6 +1122,7 @@ void RenderStage::drawInner(osg::RenderInfo& renderInfo,RenderLeaf*& previous, b
 struct DrawInnerOperation : public osg::Operation
 {
     DrawInnerOperation(RenderStage* stage, osg::RenderInfo& renderInfo) :
+        osg::Referenced(true),
         osg::Operation("DrawInnerStage",false),
         _stage(stage),
         _renderInfo(renderInfo) {}