os-posix: replace pipe()+cloexec with g_unix_open_pipe(CLOEXEC)

Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
1 file changed