[RFA] Remove set debug lin-lwp-async, new ui_file.to_write_async_safe

[Doug Evans]

On Fri, May 13, 2011 at 12:05 PM, Stan Shebs <stanshebs@earthlink.net> wrote:
> On 5/13/11 10:32 AM, Doug Evans wrote:
>>
>>         (stdio_file_write_async_safe): New function.
>
> FYI, my build moans about the unchecked result of write() in this, although
> it's not clear what one ought to do with a result.

Yeah.  The gcc I was using doesn't warn about this.
Hui Zhu checked in a fix using the same style as the rest of the file
(which was the right thing to do, at least at the moment).

I added a comment because

  if (foo ())
    ;

is so not what I expect to avoid warnings of this kind.
And it looks like the gcc gods decided (void) foo (); wasn't ok.  Sigh.

I didn't add comments to the other invocations, but I wouldn't mind them.