There’s no need to convert the file name/path to QUrl,
and then back again to QString before calling qt_findAtNxFile().
Call qt_findAtNxFile first, and then convert to QUrl.
This makes sure the url-name and string-name stays
in sync.
Change-Id: I8b8939eabbdaff473945ebe31faafd408e9c4295
Pick-to: 5.15
Fixes: QTBUG-60793
Reviewed-by: Andy Shaw <andy.shaw@qt.io>
