manage: Make sure various management flags are treated as unsigned

manage: Make sure various management flags are treated as unsigned

The variables that hold them are already unsigned, make sure
the flags are as well to avoid spurious conversion warnings.

Change-Id: I0937165c5efa95136bd951345a076e33e396f26a
Signed-off-by: Frank Lichtenheld <frank@lichtenheld.com>
Acked-by: Arne Schwabe <arne-openvpn@rfc2549.org>
Message-Id: <20250826184904.22057-1-gert@greenie.muc.de>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg32687.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>