Handle HostNotFoundError correctly for HTTP/2

When processing host lookup error if-statement only checks the connection
type SPDY, which is not right - it could also be HTTP/2. As a bonus:
QT_NO_SSL conditional inclusion is not needed - HTTP2 can be 'clear text'
and SPDY enumerator is defined even in no-tls build (and is just a
noop here). Also, improve our somewhat cryptic message in 'Should not happen'
else branch - 'cannot dequeu' says nothing about HostNotFoundError.

Task-number: QTBUG-64721
Change-Id: Ib0346b8717c2dbddaffab690298f3cae01e338ea
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>

0 files changed, 0 insertions, 0 deletions