openvaf test do not pass on rv64

Just for fun tried to compile openvaf on JH7110

```
thread 'main' panicked at openvaf/openvaf/tests/integration.rs:28:39: called `Option::unwrap()` on a `None` value test noise                        ... test panicked: called `Option::unwrap()` on a `None` value FAILED   failures:      $limit     noise test result: FAILED. 0 passed; 2 failed; 26 ignored; 0 filtered out; finished in 0.00s
```