Simplify multi_connection_established.

Simplify multi_connection_established.

Instead of having the whole function as

        if (x) { func }

do

        if (!x) return;
        func

Due to the whitespace changes in the function body this patch looks
very strange. Ignoring whitespace makes the diff look sane.

Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Antonio Quartulli <antonio@openvpn.net>
Message-Id: <20200707121615.15736-3-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg20231.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>