On Windows, using a URL of "file:///c:/" as a base to be resolved with
"../" should not result in the Windows drive being removed.
[ChangeLog][QtCore][QUrl] Fixed a bug (regression from 6.7) where
resolving a base URL of an absolute file path containing a Windows drive
could result in said drive being removed (e.g., resolving "file:///c:/"
with "../" would result in "file:///").
Fixes: QTBUG-133402
Change-Id: I58286b9c5e5d02363f0efffdb06f983b560340df
Reviewed-by: David Faure <david.faure@kdab.com>
(cherry picked from commit 340c9d88ab353e201f117d64609fa5f7d2fa2b21)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
(cherry picked from commit 8c5736e68f9619a6f2f223c7363a820e528d089c)
d4ceec964b