[MacPorts] #62318: urlview @0.9-20 fails to build with Xcode 12

[MacPorts]

#62318: urlview @0.9-20 fails to build with Xcode 12
----------------------+-----------------------------
  Reporter:  raw-bin  |      Owner:  jmroot
      Type:  defect   |     Status:  closed
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.6.99
Resolution:  fixed    |   Keywords:  bigsur catalina
      Port:  urlview  |
----------------------+-----------------------------
Changes (by jmroot):

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


Comment:

 In [changeset:"e800645117c5858ec582639cd072ed6b6bbcc7f3/macports-ports"
 e800645117c5858ec582639cd072ed6b6bbcc7f3/macports-ports] (master):
 {{{
 #!ConfigurableCommitTicketReference repository="macports-ports"
 revision="e800645117c5858ec582639cd072ed6b6bbcc7f3"
 urlview: fix implicit declaration

 Closes: https://trac.macports.org/ticket/62318
 }}}

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Ticket URL: <https://trac.macports.org/ticket/62318#comment:2>
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