From Cedric Pinson, Traverse StripAction instead of applying, this fix the execution of FrameCallback in BlendIn, BlendOut and AnimationAction\nFix warning of osgAnimation::StatsHandler\nFix crash when running example osganimationtimeline without nathan.osg in OSG_FILE_PATH or with bad file

src/osgAnimation/StatsHandler.cpp

@@ -441,7 +441,7 @@ struct ValueTextDrawCallback : public virtual osg::Drawable::DrawCallback
                     _actions[name].setPosition(pos);
                     //_actions[name].touch();
                 }
-                _actions[name]._group->setNodeMask(-1);
+                _actions[name]._group->setNodeMask(~0);
                 size[name] = 0;
                 pos.y() -= characterSize + graphSpacing;
             }