Bug 996250: Improve the error message for SSL_ERROR_NEXT_PROTOCOL_NO_PROTOCOL. r=martin.thomson.
Bug 996250: Improve the error message for
SSL_ERROR_NEXT_PROTOCOL_NO_PROTOCOL. r=martin.thomson.

ekr/nss-old,ekr/nss-old,ekr/nss-old,ekr/nss-old,ekr/nss-old,ekr/nss-old,ekr/nss-old