[PATCH] Fix an internal error in do_print_to_mapfile seen with gold on arm

[Cary Coutant]

> +2015-02-27  Khem Raj  <raj.khem@gmail.com>
> +
> +       * attributes.h (class Output_attributes_section_data ): Add
> +       do_print_to_mapfile function.

This is OK for trunk. Thanks!

-cary