[MacPorts] #53414: selfupdate fails with old rsync_dir value in macports.conf

[MacPorts]

#53414: selfupdate fails with old rsync_dir value in macports.conf
------------------------+--------------------
  Reporter:  gkshenaut  |      Owner:  Ionic
      Type:  defect     |     Status:  closed
  Priority:  Normal     |  Milestone:
 Component:  base       |    Version:  2.4.0
Resolution:  fixed      |   Keywords:
      Port:             |
------------------------+--------------------

Comment (by Ionic):

 This should also fix existing and new installations, provided users didn't
 uncomment the option in their config file.

 Yes, the tarball method is much preferred and users should switch to it.
 New installations already use that by default. This is just to unbreak
 older ones. I came across this problem a few month ago and fixed it ad-hoc
 on my machine, but was too lazy to follow-up in code. Here it is now.

--
Ticket URL: <https://trac.macports.org/ticket/53414#comment:13>
MacPorts <https://www.macports.org/>
Ports system for macOS