gccrs: Fix an issue with ForeverStack::dfs_rib

gcc/rust/ChangeLog:

	* resolve/rust-forever-stack.hxx
	(ForeverStack::dfs_rib): Fix const implementation.

Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>

diff --git a/gcc/rust/resolve/rust-forever-stack.hxx b/gcc/rust/resolve/rust-forever-stack.hxx
index 1c83f6bda613517d59733ec4b7f6b0ea8b7860c2..d0d74217b613ad1d52da6b3276bf40ef398cfa00 100644 (file)
--- a/gcc/rust/resolve/rust-forever-stack.hxx
+++ b/gcc/rust/resolve/rust-forever-stack.hxx
@@ -638,9 +638,8 @@ tl::optional<const Rib &>
 ForeverStack<N>::dfs_rib (const ForeverStack<N>::Node &starting_point,
                          NodeId to_find) const
 {
-  return dfs_node (starting_point, to_find).map ([] (Node &x) -> Rib & {
-    return x.rib;
-  });
+  return dfs_node (starting_point, to_find)
+    .map ([] (const Node &x) -> const Rib & { return x.rib; });
 }
 
 template <Namespace N>