[metrics] Fix weird use of xor
authorBehdad Esfahbod <behdad@behdad.org>
Thu, 18 Jul 2019 21:25:45 +0000 (14:25 -0700)
committerBehdad Esfahbod <behdad@behdad.org>
Thu, 18 Jul 2019 21:25:45 +0000 (14:25 -0700)
commit2bd953ff4f656f042dba2845f0479a7fe7c439a6
treed7d06bc6a353008b243eba3b12af94e99fa8b4d0
parent9675a067bf1cc0e5d4707c1345736fda4be75b82
[metrics] Fix weird use of xor

I believe that was a try to use one approach as fallback to other.  But
felt wrong.  Just believe what's in OS/2 table to be correct.
src/hb-ot-metrics-internal.cc
src/hb-ot-os2-table.hh