Use variable-length array idiom for SfxType::aAttrib
Use variable-length array idiom for SfxType::aAttrib

...to avoid false -fsanitize=array-bounds warnings.  All instances of SfxType
are created (in idl) as instances of SfxTypeN with properly sized nAttrib
arrays.

Change-Id: Iad9faa467affed656750df6bb8579d85829e97ca

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core