Re: Wrong defeinition of pq_putmessage_noblock since 9.5

I wrote:
> Kyotaro HORIGUCHI <horiguchi.kyotaro@lab.ntt.co.jp> writes:
>> Any work in this area is likely 10.0 material at this point.

> I'm not really happy with that, since refactoring it again will create
> back-patch hazards.  But I see that a lot of the mess here was created
> in 9.5, which means we're probably stuck with back-patch hazards anyway.

I've pushed Kyotaro-san's original patch, which is clearly a bug fix.
I think the additional changes discussed later in this thread are
cosmetic, and probably should wait for a more general review of the
layering decisions in pqcomm.c.
        regards, tom lane