Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Timothy J Fontaine <tjfontaine@gmail.com>
Reviewed-By: Julien Gilli <julien.gilli@joyent.com>

Because of constant-timeness change made in openssl-1.0.1j the error is
no longer returned from EVP_DecryptFinal_ex. Now it just return 0, and
thus the error message does not contain proper error code. Adapt to this
change, there is not much that we could do about it.

When Decipher processes a stream using an incorrect key, the
DecipherFinal() method throws an unhandled exception at the end of the
stream.

When using some stream method on a lazy crypto stream, the transform
constructor wasn't called. This caused the internal state object to
be undefined.