fix start timestamp in sentence_info (#2024)

lingji-yidong

2024-08-19 f43da18b5e097515c12438c70fc7918c29e5d0c8

 runtime/onnxruntime/src/fsmn-vad.h

@@ -28,6 +28,8 @@
        std::vector<std::vector<float>> *in_cache,
        bool is_final);
    void Reset();

    int GetVadSampleRate() { return vad_sample_rate_; };
    
    std::shared_ptr<Ort::Session> vad_session_ = nullptr;
    Ort::Env env_;