the only place where this actually saves a deep copy is the evaluation
of if(), but as a side effect the parser is now able to deal with not
null-terminated strings, which is kinda nice as well.
Change-Id: Ib6d08617aa79d2f9eaecd4906d4d548f34bf377d
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>