优化端口预占用，防止占用无法释放

648540858

2023-06-28 a77628e8759901abc3219412fc2c4aced940db28

 src/main/java/com/genersoft/iot/vmp/vmanager/gb28181/ptz/PtzController.java

@@ -97,6 +97,9 @@
            cmdCode = 32;
            break;
         case "stop":
            horizonSpeed = 0;
            verticalSpeed = 0;
            zoomSpeed = 0;
            break;
         default:
            break;