message: Redefine the converting assignment in iterator
diff: @@ -8078,15 +8078,10 @@ class basic_json
  @return const/non-const iterator
  @note It is not checked whether @a other is initialized.
  */
  - iter_impl& operator=(iter_impl<basic_json> other) noexcept(
  - std::is_nothrow_move_constructible<pointer>::value and
  - std::is_nothrow_move_assignable<pointer>::value and
  - std::is_nothrow_move_constructible<struct internal_iterator>::value and
  - std::is_nothrow_move_assignable<struct internal_iterator>::value
  - )
  + iter_impl& operator=(const iter_impl<basic_json>& other) noexcept
  {
  - std::swap(m_object, other.m_object);
  - std::swap(m_it, other.m_it);
  + m_object = other.m_object;
  + m_it = other.m_it;
  return *this;
  }
  