and not from ScDPLabelData (that's what old code used to do as well).
Afaics ScDPLabelData.mnFuncMask member is never modified as the array
gets populated in ScDPObject::FillLabelDataForDimension. UI has thus
only its default value (PIVOT_FUNC_NONE) and so subtotals get reset
on every change.

ScPivotField however contains the right func mask, so take it from
there.

Change-Id: I862be121683aac079e788ce535f714ac8cdbcd0b
Reviewed-on: https://gerrit.libreoffice.org/20041Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Eike Rathke <erack@redhat.com>