* test/net/protocol/test_protocol.rb: the backported test assumed that the
  source encoding is UTF-8 (because it's 2.0.0 spec).


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@38833 b2dd03c8-39d4-4d8f-98ff-823fe69b080e