message: Add an explicit deduction guide for bind_ptr
diff: @@ -260,6 +260,12 @@ private:
  friend class bind_ptr;
  };
  +// Deduction guides
  +template <class T>
  +bind_ptr(T*) -> bind_ptr<T>;
  +template <class T>
  +bind_ptr(T*, bind_ptr_base::adopt_tag) -> bind_ptr<T>;
  +
  template <class T, typename... Args>
  bind_ptr<T> make_bind(Args&&... __args)
  {
  