happens on the crashtesting box, but not locally, comparing the stack frames its clear
that the stack used on the crashtester for VclPixelProcessor2D::processBasePrimitive2D is
over double that used locally...

comparison on
> objdump -S workdir/CxxObject/drawinglayer/source/processor2d/vclmetafileprocessor2d.o |less
gives...
void VclMetafileProcessor2D::processBasePrimitive2D(const primitive2d::BasePrimitive2D& rCandidate)
gcc-4.8.2-3.2.mga4 has...       sub    $0x5b0,%rsp
vs...
gcc-8.1.1-5.fc28.x86_64 has...  sub    $0x2e0,%rsp

lets split up this method

Change-Id: I6d84f555a01b5c58f530adb9b9b8cb8803c985bf
Reviewed-on: https://gerrit.libreoffice.org/58364
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>