Fix bootstrap in gcc/fortran/

[FX Coudert]

Hi Paul,

> I have added the initialization that you suggested.  I do not know how
> this happened; the patch had been bootstrapped on three different
> systems, a good number of times over many months.  It must have lost
> the initialization during the final sprucing-up.

I know you did test seriously, but no matter what we do, errors like  
that always happen. Spotting them early and fixing them quickly, like  
you did, is the best course of action. Thanks for doing it.

Don't let my hasty mail prevent you from continuing the great job  
you're doing on the front-end, in areas I don't even dare try to  
understand!

FX