test_cipher.rb: show cipher name

* test/openssl/test_cipher.rb (test_ciphers): show wrap mode
  cipher name, which does not end with "wrap".
  http://rubyci.blob.core.windows.net/fedora21/ruby-trunk/log/20150212T061502Z.fail.html.gz

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49575 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/openssl/test_cipher.rb

@@ -107,7 +107,10 @@ class OpenSSL::TestCipher < Test::Unit::TestCase
         begin
           assert_kind_of(OpenSSL::Cipher::Cipher, OpenSSL::Cipher::Cipher.new(name))
         rescue OpenSSL::Cipher::CipherError => e
-          next if /wrap\z/ =~ name and e.message == 'wrap mode not allowed'
+          if e.message == 'wrap mode not allowed'
+            assert_match(/wrap\z/, name, e.message)
+            next
+          end
           raise
         end
       }