bug#6074: accept-process-output on listening sockets cause non-interruptible infloop

[Eli Zaretskii]

> From: Pip Cet <pipcet@gmail.com>
> Date: Mon, 22 Jul 2019 03:52:33 +0000
> 
> diff --git a/src/process.c b/src/process.c
> index abadabe77e..1311409274 100644
> --- a/src/process.c
> +++ b/src/process.c
> @@ -5277,7 +5277,9 @@ wait_reading_process_output (intmax_t time_limit, int 
> nsecs, int read_kbd,
>                 int nread = read_process_output (proc, wait_proc->infd);
>                 if (nread < 0)
>                   {
> -                   if (errno == EIO || would_block (errno))
> +                   if (errno == EINTR)
> +                     continue;
> +                   else
>                       break;
>                   }
>                 else

Isn't it better to simply call rarely_quit inside the loop?