multi: remove extra brackets in multi_process_incoming_link()

multi: remove extra brackets in multi_process_incoming_link()

After getting rid of all PF related ifdef blocks, a pair of
useless brackets has remained in multi_process_incoming_link().
These brackets do nothing at the moment and can be just removed.

Signed-off-by: Antonio Quartulli <a@unstable.cc>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20210913144531.8889-1-a@unstable.cc>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg22834.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>