[PATCH, ada]: Use xasprintf instead of unchecked asprintf

[Eric Botcazou]

> 2014-12-31  Uros Bizjak  <ubizjak@gmail.com>
> 
>     * gcc-interface/misc.c (internal_error_function): Use xasprintf instead
>     of unchecked asprintf.
> 
> Although almost trivial, this patch is *not* tested, so I'd kindly ask
> someone to bootstrap and regresion test this patch.

Sanity checked only, but that's good enough so you can apply it, thanks.

-- 
Eric Botcazou