crypto: fix memory leak in Connection::New

Do not create `SSL` instance twice, `SSL_new` is called from `SSLBase`
constructor anyway.

Reviewed-By: Fedor Indutny <fedor@indutny.com>
crypto: allow padding in RSA methods

Reviewed-By: Trevor Norris <trevnorris@gmail.com>
src: reading/owner/onread/onconnection for tcp

    Initialize fields to avoid Hidden Class creation in runtime.