For cpp ws srv long file core dump (#833)

zhaomingwork

2023-08-11 dd29390ef0fdfc0ad1c13f0246b3184323eedb93

 funasr/bin/vad_inference_launch.py

@@ -123,7 +123,7 @@
                vad_results.append(item)
                if writer is not None:
                    ibest_writer["text"][keys[i]] = "{}".format(results[i])

        torch.cuda.empty_cache()
        return vad_results

    return _forward