Use openssl_err_t typedef to deal with difference between TLS libraries

Use openssl_err_t typedef to deal with difference between TLS libraries

AWS-LC and OpenSSL disagree on the type of that errors are reported in.

Instead of having a lot of glue code and casting back and forth, use a
typedef to always use the right type.

Change-Id: I4adbdf0c8b82fd7de309aa5f6f3b0c8157c5ffe7
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Frank Lichtenheld <frank@lichtenheld.com>
Gerrit URL: https://gerrit.openvpn.net/c/openvpn/+/1578
Message-Id: <20260322111131.8251-1-gert@greenie.muc.de>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg36242.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>