...after 945c10f4 "upload harfbuzz 1.6.3" had
dropped it completely.  Still necessary to e.g. avoid "runtime error: index 3
out of bounds for type 'OT::LongMetric const[1]'" during CppunitTest_emfio_wmf.

Change-Id: Idd93f6224f7e43016a71678bcaf5cc0527f95cee