CGAL: avoid a compiler warning

Avoid an unnecessary copy:

source/cgal/intersections.cc:555:25: note: use reference type to prevent copying
  555 |         for (const auto f : tria_quad.finite_facets())
      |                         ^
      |                         &

diff --git a/source/cgal/intersections.cc b/source/cgal/intersections.cc
index fbf5dd76b17c9a4240fca225920107182966f0c3..f3ea9d9d90eb0f091c438062250b2da5212f8517 100644 (file)
--- a/source/cgal/intersections.cc
+++ b/source/cgal/intersections.cc
@@ -552,7 +552,7 @@ namespace CGALWrappers
       {
         const auto &tet = tria.tetrahedron(c);
 
-        for (const auto f : tria_quad.finite_facets())
+        for (const auto &f : tria_quad.finite_facets())
           {
             if (CGAL::do_intersect(tet, tria_quad.triangle(f)))
               {