Fix massive confusion on server reload
    
    The 2.86 upstream server rewrite severely broke re-reading
    of server configuration. It would get everyting right the first
    time, but on re-reading /etc/resolv.conf or --servers-file
    or setting things with DBUS, the results were just wrong.
    
    This should put things right again.
    
    No fedora bug reference, reported upstream:
    https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016166.html