PATCH: silence warning in libiberty/pex-unix.c

[Ian Lance Taylor]

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

> -#define writeerr(s) write (STDERR_FILE_NO, s, strlen (s))
> +#define writeerr(s) if (write (STDERR_FILE_NO, s, 0) < 0) _exit (-1)

Just cast the result to (void).  I'll preapprove that patch if that
works.

Ian