IP with port doesn't open as URL anymore

[The-Compiler]

Since 5008b3b, opening something like 192.168.0.118:8083 causes a search instead of opening the IP as URL.

@arza-zara could you please take a look?

[The-Compiler]

We do this currently:

    if not utils.raises(ValueError, ipaddress.ip_address, urlstr):
        # Valid IPv4/IPv6 address
        return True

which catches cases like 192.168.0.118 but not 192.168.0.118:8083. Maybe we should just use url.host() (or host) instead of urlstr there?

[arza-zara]

Maybe we should just use url.host()

I guess so, except host() converts some stuff to IP addresses, so I added an additional substring check. isNull() check seemed unnecessary so I removed it. See #5139.