* ext/openssl/ossl.c (ossl_verify_cb): trap the exception from
  verify callback of SSLContext and X509Store and make the
  verification fail normally. Raising exception directly from callback
  causes orphan resouces in OpenSSL stack. Patched by Ippei Obayashi.
  See #4445.

* test/openssl/test_ssl.rb
  (test_exception_in_verify_callback_is_ignored): test it.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@32538 b2dd03c8-39d4-4d8f-98ff-823fe69b080e