[MacPorts] #59982: zlib +universal on Catalina

[MacPorts]

#59982: zlib +universal on Catalina
--------------------------+--------------------
 Reporter:  umeshksingla  |      Owner:  (none)
     Type:  defect        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.6.99
 Keywords:                |       Port:  zlib
--------------------------+--------------------
 The migration script (from 10.13 to 10.15) tried to install `zlib` as some
 port's dependency and got the following error:
 {{{
 Error: zlib cannot be installed for the configured universal_archs 'x86_64
 i386' because the arch(s) 'i386' are not supported.
 Error: Follow https://guide.macports.org/#project.tickets to report a bug.
 Error: Processing of port zlib failed
 }}}

 It works without `+universal` though.

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Ticket URL: <https://trac.macports.org/ticket/59982>
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