comms/xastir: reset maintainership

• Somehow this got missed 10 years ago :-(

From SRS0+5203f6e19c1a21a6=EU=stagecraft.cx=carl@mx25.net Tue Apr 7 00:15:53 2015
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To: portmgr@freebsd.org
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Date: Tue, 07 Apr 2015 14:09:14 +1000
From: Carl <carl@stagecraft.cx>
Cc: Diane Bruce <db@db.net>
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Hi,
I'm currently the maintainer (that I know of) of 3 ports;

comms/xastir
comms/hamfax
comms/gmfsk

Could you please reassign the maintainer to "hamradio@freebsd.org".
This will allow a group of us to manage these ports rather than relying
on me.

Thanks!

Carl.