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由 Daniel Walter 提交于
Return error instead of trying to unlock a mutex that is not hold. Signed-off-by: NDaniel Walter <dwalter@google.com> Reviewed-by: NAnton Ivanov <anton.ivanov@cambridgegreys.com> Acked-by: NAnton Ivanov <anton.ivanov@cambridgegreys.com> Signed-off-by: NRichard Weinberger <richard@nod.at>
9ca55299