[MacPorts] #45572: new fallback livecheck fails for ports that don't set master_sites

[MacPorts]

#45572: new fallback livecheck fails for ports that don't set master_sites
---------------------------+---------------------------
  Reporter:  ryandesign@…  |      Owner:  khindenburg@…
      Type:  defect        |     Status:  closed
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.3.99
Resolution:  fixed         |   Keywords:
      Port:                |
---------------------------+---------------------------

Comment (by ryandesign@…):

 I'm now getting this error with xping:

 {{{
 $ port livecheck xping
 Error: Failed to livecheck xping: can't read "livecheck.url": can't read
 "homepage": no such variable
 Error: See
 /opt/local/var/macports/logs/_Users_rschmidt_macports_dports_x11_xping/xping/main.log
 for details.
 Error: Follow http://guide.macports.org/#project.tickets to report a bug.
 Error: Processing of port xping failed
 }}}

 The `homepage` variable is also "required", as was `master_sites`, but it
 would be nice if ports that don't set them didn't show errors.

-- 
Ticket URL: <https://trac.macports.org/ticket/45572#comment:4>
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