crypto: Make sure crypto flags are treated as unsigned

crypto: Make sure crypto flags are treated as unsigned

crypto_options.flags is already unsigned, make sure the
flags are as well to avoid spurious conversion warnings.

Change-Id: I89820c76e2e099f7acb817c71c8aeb83736ac556
Signed-off-by: Frank Lichtenheld <frank@lichtenheld.com>
Acked-by: Arne Schwabe <arne-openvpn@rfc2549.org>
Message-Id: <20250826184935.22110-1-gert@greenie.muc.de>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg32688.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>