Avoid attempting to parse insanely long texts as zone names

There are limits on zone name length and the trial-and-error approach
we're more or less forced to take to parsing gets horribly expensive
if applied to every prefix of a very long string. So apply a loosened
version of the zone-name validity rule that limits the length of the
fragments between slashes and limit the number of such fragments.

Fixes: QTBUG-92275
Change-Id: I83052b1b6888728c81135db22a9c6298ae439375
Reviewed-by: Robert Löhning <robert.loehning@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
(cherry picked from commit 0c9fc20e7ff7b4ff0f15e0b2c071ea834625dce9)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

0 files changed, 0 insertions, 0 deletions