Fix clippy failing CI.

[mstyura]

Noticed that after my MR merged the CI is failing, hopefully this fixed it.

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This change is 

[mstyura]

@faern this MR should probably fix CI on main branch. At least locally cargo clippy --all-features --all-targets succeed now.

[faern]

I noticed cargo test failed on main even before your PR also.

[faern]

cargo test is still failing for me. From what I can tell test_service_order still fails. Does it pass for you locally?

[mstyura]

On my local machine tests are "green":

cargo test                                 
    Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
     Running unittests src/lib.rs (target/debug/deps/system_configuration-3fdd7b46168972d6)

running 10 tests
test network_configuration::test::test_empty_array ... ok
test preferences::tests::retain_count ... ok
test network_reachability::test::test_network_reachability_from_addr ... ok
test network_reachability::test::test_reachability_ref_from_host ... ok
test network_configuration::test::test_service_order ... ok
test network_reachability::test::test_sockaddr_pair_reachability ... ok
test network_configuration::test::test_get_type ... ok
test network_configuration::test::test_get_all_interfaces ... ok
test network_reachability::test::test_sockaddr_local_to_dns_google_pair_reachability ... ok
test network_reachability::test::assert_infallibility_of_setting_a_callback ... ok

test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.01s

     Running unittests src/lib.rs (target/debug/deps/system_configuration_sys-c05115564a7ec50e)

running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

   Doc-tests system_configuration

running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

   Doc-tests system_configuration_sys

running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

cargo check --all --tests --examples --bins
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s

cargo clippy --all-features --all-targets 
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s

[faern]

Ok! Not for me, but your changes also does not make anything worse. The cfg stuff is indeed something we should be updating. So let's merge this, even if the tests still fail for me locally.

[mstyura]

Seems the last problem is:

Error: Resource not accessible by integration

which seems to be the problem with gitlab ci job itself.

[faern]

Yes indeed. I'm working on that in #57