some more cleanup in ComputeGradient

Author: krzysg

src/algorithm/APRConverter.hpp

@@ -234,7 +234,7 @@ void APRConverter<ImageType>::get_gradient(MeshData<ImageType> &image_temp, Mesh
 
     fine_grained_timer.start_timer("smooth_bspline");
     if(par.lambda > 0) {
-        get_smooth_bspline_3D(image_temp, par);
+        get_smooth_bspline_3D(image_temp, par.lambda);
     }
     fine_grained_timer.stop_timer();