ossl_x509ext.c: typed data

* ext/openssl/ossl_x509ext.c (ossl_x509ext_type): use typed data.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48812 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
ossl_x509ext.c: typed data

* ext/openssl/ossl_x509ext.c (ossl_x509extfactory_type): use typed
  data.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48813 b2dd03c8-39d4-4d8f-98ff-823fe69b080e