This is an automated change performing the following replacements:
join\("(.)"\) -> join('\1')
join\(QLatin1String\("(.)"\)\) -> join(QLatin1Char('\1'))
join\(QStringLiteral\("(.)"\)\) -> join(QLatin1Char('\1'))
Change-Id: I1d0c9782cc1522d937b930531720e32d4c8f7ce8
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>