eliminate warnings from arlex.c

[Ian Lance Taylor]

"Ben Elliston" <bje@au1.ibm.com> writes:

> > %option is specific to flex.  I personally don't think the cost of a
> > few warnings is enough to justify requiring flex here, particularly
> > since we don't distribute flex with the binutils.  But that is just
> > my opinion.
> 
> Don't binutils releases include the generated files?  Isn't it only
> developers that require host tools like flex?

Yes.  But lots of people do binutils development.  I have no problem
with requiring particular tools when it is useful.  But we should only
require a new tool for a sufficiently good reason. I'm not sure that
eliminating a few warnings is a sufficiently good reason.

Ian