And also, reduce the utter sloppiness, weirdness of the test and
make it more a test and not a joke. Since the test itself depends
on !QT_NO_SSL, why bother building and running its main, to create
a useless tst_QSslError and do nothing then? Exclude test from
no-ssl build.
Pick-to: 5.15
Pick-to: 6.0
Change-Id: I67879b0de036cbc8c2f75a18f4cf94e6c43c5af0
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>