[DVIPDFMx] [PATCH] Fix computation of numOfExSideBearings in tt_read_{h,v}hea_table

[Tomas Janousek]

Hello,

I'm attaching a patch fixing the problem desribed at [1]. Yes, I use
xdvipdfmx, but the code in dvipdfmx is wrong as well and you should probably
fix it.

[1] http://thread.gmane.org/gmane.comp.tex.xetex/10782

The following line, as I understand it, computes the number of extra side
bearings as a number of extra shorts after the initial numOfLongHorMetrics
pairs in the hmtx table. Then, well, the len variable should hold the size of
the hmtx table, not hhea.

  table->numOfExSideBearings = (USHORT)((len - table->numOfLongHorMetrics * 4) / 2);

Regards,
-- 
Tomáš Janoušek, a.k.a. Liskni_si, http://work.lisk.in/
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