Update converters/fribidi from 0.10.3 to 0.10.4.
Update committed, thanks!
As a side note, it seems we have two different fribidi ports in the
ports collection, textproc/fribidi and converters/fribidi. Would you
please determine whether it is the same software package, and if so,
which one is actually more recent and which one should be removed? Both
ports are unmaintained.