added call to copy constructor for virtual base classes in copy constructor of derived classes, removed these for abstract classes

src/osgViewer/CompositeViewer.cpp

@@ -30,8 +30,8 @@ CompositeViewer::CompositeViewer()
     constructorInit();
 }
 
-CompositeViewer::CompositeViewer(const CompositeViewer& cv,const osg::CopyOp& /*copyop*/):
-    osg::Object(true),
+CompositeViewer::CompositeViewer(const CompositeViewer& cv,const osg::CopyOp& copyop):
+    osg::Object(cv, copyop),
     ViewerBase(cv)
 {
     constructorInit();

src/osgViewer/View.cpp

@@ -177,7 +177,7 @@ View::View():
 
 
 View::View(const osgViewer::View& view, const osg::CopyOp& copyop):
-    osg::Object(true),
+    osg::Object(view, copyop),
     osg::View(view,copyop),
     osgGA::GUIActionAdapter(),
     _startTick(0),

src/osgViewer/Viewer.cpp

@@ -194,7 +194,7 @@ Viewer::Viewer(osg::ArgumentParser& arguments)
 }
 
 Viewer::Viewer(const osgViewer::Viewer& viewer, const osg::CopyOp& copyop):
-    osg::Object(true),
+    osg::Object(viewer, copyop),
     ViewerBase(viewer),
     View(viewer,copyop)
 {