[PATCH] Cygwin: pipe: Suppress unnecessary set_pipe_non_blocking() call.

[Ken Brown]

On 11/17/2021 3:08 AM, Takashi Yano wrote:
> - Call set_pipe_non_blocking(false) only if the pipe will be really
>    inherited to non-cygwin process.

LGTM, but Corinna should probably take a quick look too, since I'm not very 
familiar with this part of the code.

Ken