[MacPorts] #45318: zsh: add texi2html build dependency

[MacPorts]

#45318: zsh: add texi2html build dependency
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  Reporter:  ionic@…  |      Owner:  larryv@…
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.3.1
Resolution:           |   Keywords:  haspatch maintainer
      Port:  zsh      |
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Comment (by larryv@…):

 Replying to [comment:2 ionic@…]:
 > Without that, the variable is substituted in Makefile templates with
 > nothing, but still being called and the lines will be failing (up to
 > the point of the make process segfaulting, interestingly.)

 Okay, I see that segfault too, but only in trace mode; otherwise Make just
 ignores the error. Please open a new ticket about that.

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Ticket URL: <https://trac.macports.org/ticket/45318#comment:3>
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