small fixes

2026-05-27 16:10:03 +02:00
parent b22a830d18
commit 98d58d8e60
2 changed files with 6 additions and 4 deletions
@@ -113,8 +113,8 @@ class null_observer : public observer<Type> {
 public:
  template < class OtherType >
  explicit null_observer(const null_observer<OtherType> *) {}
-  void on_attach(repository_node &, Type &) override {}
-  void on_detach(repository_node &, Type &) override {}
+  void on_attach(const repository_node &, const Type &) const override {}
+  void on_detach(const repository_node &, const Type &) const override {}
  void on_insert(Type &) override {}
  void on_update(Type &) override {}
  void on_delete(Type &) override {}