remove trailing whitespace grrrrrrrrrrrrr

src/point_tris_dist.cc

@@ -17,7 +17,7 @@ double pointSegmentDistance(double *p, double *a, double *b, double* direction)
         vtkMath::Normalize(direction);
         return vtkMath::Norm(ap, 3);
     }
-	
+
     double h = vtkMath::ClampValue(vtkMath::Dot(ap, ab) / segSqrLength, 0., 1.);
 
     vtkMath::MultiplyScalar(ab, h);