* test/openssl/test_hmac.rb (test_binary_update): Added Test for
  HMAC signing with UTF-8 String. [Bug #7512][ruby-core:50559]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46161 b2dd03c8-39d4-4d8f-98ff-823fe69b080e