...warning about non-overriding virtual dtors in final classes. Every single
one of these might or might not be suspicious (e.g., in some cases it might be
better to have a virtual dtor in a derived-from class). Also, for some of the
virtual dtors, making them non-virtual then caused
> error: unnecessary user-declared destructor [loplugin:unnecessaryoverride]
so those were removed completely.
Change-Id: If0ee71645a347d6096b65988c56f627c42fe54b2
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/185223
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <stephan.bergmann@allotropia.de>