fix retract error (#1350)

夜雨飘零

2024-02-03 2cf4084b23db9bd9e8ce4db76d0628ef6655ed71

 runtime/websocket/bin/websocket-server.cpp

@@ -85,6 +85,7 @@
          stamp_sents = FunASRGetStampSents(Result);
          FunASRFreeResult(Result);
        } else{
          std::this_thread::sleep_for(std::chrono::milliseconds(20));
          LOG(ERROR) << "FUNASR_RESULT is nullptr.";
        }
      }catch (std::exception const& e) {