Fix Stdio.UDP()->wait() on NT.
Imported from https://youtrack.roxen.com/issue/PIKE-129
Reported by @grubba
The implementation of Stdio.UDP()->wait()
on NT usually fails with WSAENOTSOCK
.
Imported from https://youtrack.roxen.com/issue/PIKE-129
Reported by @grubba
The implementation of Stdio.UDP()->wait()
on NT usually fails with WSAENOTSOCK
.