timestamp func bug fix

shixian.shi

2023-02-21 03250ae6349127e8541746a224cfabbed510b451

 funasr/export/export_model.py

@@ -44,6 +44,7 @@
            model,
            self.export_config,
        )
        model.eval()
        # self._export_onnx(model, verbose, export_dir)
        if self.onnx:
            self._export_onnx(model, verbose, export_dir)