Move the logic to calculate the y position from
SvxCharView::UpdateFont to SvxCharView::Paint
where this is used when drawing the text.
This also means its sufficient to have a local
variable, so use such a one and drop SvxCharView::mnY.
Change-Id: Ic8ab0cc773e59e9f2b016924a0cf63a871ed9706
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/195685
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>