--
* ext/openssl/ossl_pkey_dh.c (ossl_dh_initialize):
  pop pushed error after each try of reading. fixes #4550

* ext/openssl/ossl_pkey_dsa.c (ossl_dsa_initialize): ditto.

* ext/openssl/ossl_pkey_ec.c (ossl_ec_initialize): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@31796 b2dd03c8-39d4-4d8f-98ff-823fe69b080e