[MacPorts] #63529: opencolorio: fix compatibility with yaml-cpp-0.7.0

[MacPorts]

#63529: opencolorio: fix compatibility with yaml-cpp-0.7.0
--------------------------+----------------------
  Reporter:  devernay     |      Owner:  devernay
      Type:  defect       |     Status:  closed
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.7.1
Resolution:  fixed        |   Keywords:
      Port:  opencolorio  |
--------------------------+----------------------
Changes (by devernay):

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


Comment:

 In [changeset:"96157efcae6eb781e4a499a1dac7fc2453cd6c37/macports-ports"
 96157efcae6eb781e4a499a1dac7fc2453cd6c37/macports-ports] (master):
 {{{
 #!ConfigurableCommitTicketReference repository="macports-ports"
 revision="96157efcae6eb781e4a499a1dac7fc2453cd6c37"
 opencolorio: fix to compile with yaml-cpp 0.7.0

 Closes: https://trac.macports.org/ticket/62891
 Closes: https://trac.macports.org/ticket/63529
 }}}

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Ticket URL: <https://trac.macports.org/ticket/63529#comment:4>
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