Re: Improve the granularity of PQsocketPoll's timeout parameter?

I wrote:
> v3 attached uses pg_usec_time_t, and fixes one brown-paper-bag
> bug the cfbot noticed in v2.

Oh, I just remembered that there's a different bit of
pqConnectDBComplete that we could simplify now:

        if (timeout > 0)
        {
            /*
             * Rounding could cause connection to fail unexpectedly quickly;
             * to prevent possibly waiting hardly-at-all, insist on at least
             * two seconds.
             */
            if (timeout < 2)
                timeout = 2;
        }
        else                    /* negative means 0 */
            timeout = 0;

With this infrastructure, there's no longer any need to discriminate
against timeout == 1 second, so we might as well reduce this to

        if (timeout < 0)
            timeout = 0;

as it's done elsewhere.

			regards, tom lane