fix AffineConstraints::copy_from

We forgot to copy new fields introduced in #15789

diff --git a/include/deal.II/lac/affine_constraints.h b/include/deal.II/lac/affine_constraints.h
index 63a7568e2ffb4e95eb7c89d08197f2718465922b..f0195c65c260513d8743a271ec2778afdccceaca 100644 (file)
--- a/include/deal.II/lac/affine_constraints.h
+++ b/include/deal.II/lac/affine_constraints.h
@@ -2590,6 +2590,9 @@ AffineConstraints<number>::copy_from(
   lines_cache = other.lines_cache;
   local_lines = other.local_lines;
   sorted      = other.sorted;
+
+  locally_owned_dofs             = other.locally_owned_dofs;
+  needed_elements_for_distribute = other.needed_elements_for_distribute;
 }