bug#72547: [PATCH 9/9] posix.c: Set errno when pipe2 is not available and flags provided.

[Ludovic Courtès]

Tomas Volf <~@wolfsden.cz> skribis:

> --- a/libguile/posix.c
> +++ b/libguile/posix.c
> @@ -282,7 +282,7 @@ SCM_DEFINE (scm_pipe2, "pipe", 0, 1, 0,
>      /* 'pipe2' cannot be emulated on systems that lack it: calling
>         'fnctl' afterwards to set the relevant flags is not equivalent
>         because it's not atomic.  */
> -    rv = ENOSYS;
> +    rv = errno = ENOSYS;

It doesn’t make much of a difference but I changed it to:

  rv = -1, errno = ENOSYS;