[MacPorts] #53019: mogenerator: update to v1.31

[MacPorts]

#53019: mogenerator: update to v1.31
----------------------------+----------------------
  Reporter:  steventondeur  |      Owner:
      Type:  update         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.3.5
Resolution:                 |   Keywords:  haspatch
      Port:  mogenerator    |
----------------------------+----------------------
Changes (by steventondeur):

 * Attachment "Portfile-mogenerator.diff" added.

 portfile patch

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Ticket URL: <https://trac.macports.org/ticket/53019>
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