- no need for mpPolyPolygon to be allocated out of line.
- expand out LongDqPtr typedef, not much longer and makes the code
easier to read
- allocate mpBound inline using std::optional
- rename RangeCache to RangeCacheItem
Change-Id: I55032a31eaefa844059edb5f0ee599f1b813ac80
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/92079
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>