arti-client: exclude iOS from running_as_setuid check as well
The #[cfg] directive was correctly excluding macOS, but neglected to also exclude iOS as well, which has the same issue (#584 (closed)). This fixes that omission.
The #[cfg] directive was correctly excluding macOS, but neglected to also exclude iOS as well, which has the same issue (#584 (closed)). This fixes that omission.