[RFA] Avoid compilation failure due to shadow warning on cygwin target

[nick clifton]

Hi  Pierre  ,

>    I have no 2.22 branch checked out,
> could you please someone commit this?
>   Or remind me how to do it...

cvs -d :ext:sourceware.org:/cvs/src co -r binutils-2_22-branch src

Cheers
   Nick