[migration] Ignore IOError from readline.write_history_file (closes #2106621)
We already ignore them when reading the histfile, no reason writing it
back should be any different.
# copyright %(year)s %(author)s, all rights reserved.# contact %(author-web-site)s -- mailto:%(author-email)s#%(long-license)s"""%(distname)s repository side views, usually for notification"""