[MacPorts] #59644: mkvtoolnix @39.0.0 fails to build on mavericks

[MacPorts]

#59644: mkvtoolnix @39.0.0 fails to build on mavericks
--------------------+------------------------
 Reporter:  tehcog  |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:  2.6.2
 Keywords:          |       Port:  mkvtoolnix
--------------------+------------------------
 {{{
 :error:build Failed to build mkvtoolnix: command execution failed
 }}}
 Please see attached main.log file

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Ticket URL: <https://trac.macports.org/ticket/59644>
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