Re: recovery test failures on hoverfly

>> Michael Paquier <michael@paquier.xyz> writes:
>>> This is the same problem as c757a3da and 6d41dd0, where we write a
>>> query to a pipe but the kill, causing a failure, makes the test fail
>>> with a SIGPIPE in IPC::Run as a query is sent down to a pipe.

After checking the git logs, I realized that this failure is actually
new since 11e9caff8: before that, poll_query_until passed the query
on the command line not stdin, so it wasn't vulnerable to SIGPIPE.
So that explains why we only recently started to see this.

The fix I proposed seems to work fine in all branches, so I went
ahead and pushed it.

            regards, tom lane