At least on Windows antialias-drawing has to be selected via
LOGFONTW.lfQuality passed to CreateFont, so InitFont is too late.

Change-Id: Ie81c5f0074fdbcf1f0e74fbff31a5df663a67884
Reviewed-on: https://gerrit.libreoffice.org/62200
Tested-by: Jenkins
Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>