BUG: Fix bug in vtkMRMLIGTLTrackingDataBundleNode::GetTransformNode()…
requested to merge github/fork/tokjun/4011-OpenIGTLinkIF-loop-in-tkMRMLIGTLTrackingDataBundleNode into master
The new GitTag will fix the bug reported in http://www.na-mic.org/Bug/view.php?id=4011