Ethernet.hostByName() should be checked for != 1

[ssilverman]

https://github.com/JAndrassy/NetApiHelpers/blob/74db412207d7fc18e03d4d4649788c49992481ea/examples/LegacyEthernetTest/LegacyEthernetTest.ino#L85

Checking for != 1 will catch any error, per the spec.
See: https://www.arduino.cc/reference/en/libraries/wifinina/wifi.hostbyname/

[ssilverman]

I made a PR: #2

[ssilverman]

For some reason, the "init" commit was force-pushed, so I redid the PR: #3