merge revision(s) r45271: [Backport #9592] [Backport #9671]
* ext/openssl/ossl.c (ossl_make_error): check NULL for unknown error reasons with old OpenSSL, and insert a colon iff formatted message is not empty.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@45778 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) r45271: [Backport #9592] [Backport #9671]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@45778 b2dd03c8-39d4-4d8f-98ff-823fe69b080e