openssl: fix free function of OpenSSL::Cipher
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55294 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
openssl: fix free function of OpenSSL::Cipher
to free EVP_CIPHER_CTX allocated by EVP_CIPHER_CTX_new().
[ruby-core:75225] [Feature #12324]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55294 b2dd03c8-39d4-4d8f-98ff-823fe69b080e