Fix merge error in a6c573d, the ssl ctx is now abstracted.

Between the origin patch submission (2011) and now the cipher abstraction
layer has been added. This patch slipped through without proper adjustment.

Signed-off-by: Steffan Karger <steffan@karger.me>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <53863C41.1020408@karger.me>
URL: http://article.gmane.org/gmane.network.openvpn.devel/8745
Signed-off-by: Gert Doering <gert@greenie.muc.de>