Recent PR #895 moved code outside of a conditional block causing duplicate vertices

[schellingerhout]

See note

https://github.com/AngusJohnson/Clipper2/pull/895/files/63251ea069b590b36bb419b4ee8835ab133d2213#r1782788699

    {
      if (InternalClipper.IsAlmostZero(scale - 1)) return path;
      Path64 result = new Path64(path.Count);
      result.AddRange(path.Select(pt => new Point64(pt.X * scale, pt.Y * scale))); // PR Moved the else condition here
#if USINGZ
      foreach (Point64 pt in path)
        result.Add(new Point64(pt.X * scale, pt.Y * scale, pt.Z)); // in case of USINGZ vertices are added a second time
#else
#endif
      return result;
    }

[AngusJohnson]

Yep, I will fix this over the weekend. (I'm currently tied up with other things.)

[AngusJohnson]

I've now reversed the linq dependency (See also comments here).