test_ls: cannot find function expected_result in this scope

[piotrkwiecinski]

Fix for:

error[E0425]: cannot find function `expected_result` in this scope
    --> tests/by-util/test_ls.rs:3167:44
     |
3167 |             .stdout_only(unwrap_or_return!(expected_result(&ts, &[c_flag, "/"])).stdout_str());
     |                                            ^^^^^^^^^^^^^^^ not found in this scope
     |
help: consider importing this function
     |
9    | use crate::common::util::expected_result;
     |

error[E0425]: cannot find function `expected_result` in this scope
    --> tests/by-util/test_ls.rs:3197:35
     |
3197 |                 unwrap_or_return!(expected_result(&ts, &["-Z", format.as_str(), "/"])).stdout_str(),
     |                                   ^^^^^^^^^^^^^^^ not found in this scope
     |
help: consider importing this function
     |
9    | use crate::common::util::expected_result;

[cakebaker]

Thanks!