There is no need to call Utils.getservername when the :ServerName option is
specified, so delay Utils.getservername until needed to avoid unnecessary
DNS lookups. [ruby-core:78492] [Bug #13007]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57014 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
shugo