[MacPorts] #61090: molden-6.4-20200625124000_0+gcc9.darwin_19.x86_64.tbz2 build fail after upgrading to Catalina

[MacPorts]

#61090: molden-6.4-20200625124000_0+gcc9.darwin_19.x86_64.tbz2 build fail after
upgrading to Catalina
------------------------+--------------------
  Reporter:  Tschumper  |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.6.3
Resolution:             |   Keywords:  molden
      Port:  molden     |
------------------------+--------------------
Changes (by Tschumper):

 * Attachment "main.log" added.

 log from Molden build

-- 
Ticket URL: <https://trac.macports.org/ticket/61090>
MacPorts <https://www.macports.org/>
Ports system for macOS