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
If the engine was shutting down from a previous session (e.closing=true), it would return an error code when trying to get status. In that case, ipnlocal would never unblock any callers that were waiting on the status. Not sure if this ever happened in real life, but I accidentally triggered it while writing a test. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>