client-connect: Refactor client-connect handling to calling a bunch of hooks in a...

client-connect: Refactor client-connect handling to calling a bunch of hooks in a loop

This patch changes the calling of the client-connect functions into an
array of hooks and a block of code that calls them in a loop.

Signed-off-by: Fabian Knittel <fabian.knittel@lettink.de>
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Patch V5: Rebase on master.

Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Antonio Quartulli <a@unstable.cc>
Message-Id: <20200711093655.23686-6-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg20293.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>