Re: Cleaning up threading code

[Thomas Munro]

Apparently "drongo" didn't like something about this commit, and an
ecpg test failed, but I can't immediately see why.  Just "server
closed the connection unexpectedly".  drongo is running the new Meson
buildfarm variant on Windows+MSVC, so, being still in development, I
wonder if some diagnostic clue/log/backtrace etc is not being uploaded
yet.  FWIW Meson+Windows+MSVC passes on CI.