[RFA/ada] fix bug in ada-valprint.c:print_optional_low_bound()

[Joel Brobecker]

> > 2005-10-05  Joel Brobecker  <brobecker@adacore.com>
> > 
> >         * ada-valprint.c (print_optional_low_bound): Handle properly
> >         cases where the array index type is a TYPE_CODE_RANGE.
> 
> Sure, this is OK.

Thanks, checked in as well.

-- 
Joel