Make rb_objspace_data_type_memsize private
rb_objspace_data_type_memsize is not used in the objspace module, so we can make it private.
Added by peterzhu2118 (Peter Zhu) over 1 year ago
Make rb_objspace_data_type_memsize private
rb_objspace_data_type_memsize is not used in the objspace module, so we
can make it private.