... and not only one. This was a problem e.g. when there were several
requests to the same host and the host was not reachable; only one
reply would get an error signal in case we suppressed other errors in
"happy eyeballs" host lookup style.
Task-number: QTBUG-36890
Change-Id: I1b5757498bd644b0d773cf6c43e4950620949c5c
Reviewed-by: Richard J. Moore <rich@kde.org>