The raw syscall returned the two pipes whereas the libc call
takes a pointer to a location to write the two pipes.
When we switched over from raw syscalls to libc calls, this
change in behavior was missed.
Fixesgolang/go#43498
Change-Id: Icee2204dcb8be8fc94be0df106e1ff061cafa446
Reviewed-on: https://go-review.googlesource.com/c/sys/+/281432
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
