Moment Invariants

1f97c191 vtkDecimatePro: Remove unused variable
c6b9d82c TestDecimateProDegenerateTriangles: Use vtkNew instead of vtkSmartPointer
6a3bdaea vtkDecimatePro: Change warning to include degenerate vertex ID
152dc7e8 vtkDecimatePro: Add test to ensure there is no crash with degenerate triangles
fca0718d vtkDecimatePro: Fix crash when some triangles are not valid (same vertices)

Acked-by: Kitware Robot <kwrobot@kitware.com>
Tested-by: buildbot <buildbot@kitware.com>
Reviewed-by: Mathieu Westphal (Kitware) <mathieu.westphal@kitware.com>
Merge-request: !10896