[MacPorts] #67333: libupnp: uses gtest opportunistically (was: libupnp: add_subdirectory given source "gtest" which is not an existing directory)

[MacPorts]

#67333: libupnp: uses gtest opportunistically
---------------------------+------------------------
  Reporter:  barracuda156  |      Owner:  ctreleaven
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.8.1
Resolution:                |   Keywords:
      Port:  libupnp       |
---------------------------+------------------------

-- 
Ticket URL: <https://trac.macports.org/ticket/67333#comment:5>
MacPorts <https://www.macports.org/>
Ports system for macOS