The 'm_pControlNumberStyles' pointer was not released in destructor. A memory leak is possible.
Change-Id: Ie60806814ec65b73d0eaf07b53e7dc133b33bf24
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/176396
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Tested-by: Jenkins
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>
