Method ~SignalHandling

src/backward.h:4380–4390

    bool loaded() const { return true; }

    ~SignalHandling()
    {
        {
            std::unique_lock<std::mutex> lk(mtx());
            crashed() = crash_status::normal_exit;
        }

        cv().notify_one();

        reporter_thread_.join();
    }

private:
    static CONTEXT* ctx()