Fix connect attempts to further IP addresses of outgoing server links

Fix connect attempts to further IP addresses of outgoing server links

If a hostname resolves to more than one IP address (round-robin DNS,
IPv4 and IPv6) and an attempt to connect to the first address fails,
ngIRCd should try to connect to the 2nd address, 3rd address etc.

But because of a wrong variable used in the call to New_Server(),
the wrong server structure has been used in further connection attemps
which possibly lead to connection attempts to already connected servers.