[MacPorts] #68583: balsa: update to 2.6.4

[MacPorts]

#68583: balsa: update to 2.6.4
----------------------------+----------------------
  Reporter:  contextnerror  |      Owner:  drkp
      Type:  update         |     Status:  closed
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:
Resolution:  fixed          |   Keywords:  haspatch
      Port:  balsa          |
----------------------------+----------------------
Changes (by drkp):

 * status:  new => closed
 * owner:  (none) => drkp
 * resolution:   => fixed


Comment:

 In [changeset:"99d85c2c07d4db8036302987a045a99ee404796f/macports-ports"
 99d85c2c07d4db8036302987a045a99ee404796f/macports-ports] (master):
 {{{
 #!ConfigurableCommitTicketReference repository="macports-ports"
 revision="99d85c2c07d4db8036302987a045a99ee404796f"
 balsa: update to 2.6.4

 Update license to GPL-2+ to match upstream COPYING file.

 Fixes: https://trac.macports.org/ticket/68583
 Fixes: https://trac.macports.org/ticket/69666
 }}}

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Ticket URL: <https://trac.macports.org/ticket/68583#comment:6>
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