Brad Fitzpatrick b5129dadfd ipn: fix buggy-looking format string in error log
On shutdown, logs showed:
wgengine status error: &errors.errorString{s:"engine closing; no status"}
2021-01-06 20:18:29 -08:00
..
2020-12-30 17:33:02 -08:00
2020-12-30 17:33:02 -08:00