re: Failure to build -current amd64

[matthew green <mrg%eterna23.net@localhost>]

Robert Swindells writes:
> 
> >> -    size_t count = from_st->st_size;
> >>  #if defined _GLIBCXX_USE_SENDFILE && ! defined _GLIBCXX_FILESYSTEM_IS_WINDOWS
> >> +    size_t count = from_st->st_size;
> >
> > that looks right to me.  it works and i commited it.
>
> I didn't think we had sendfile(2).

the variable was unused _outside_ of the #ifdef.