修复兼容接口云台控制

src/main/java/com/genersoft/iot/vmp/web/gb28181/ApiControlController.java

@@ -44,6 +44,8 @@ public class ApiControlController {
             logger.debug("模拟接口> 设备云台控制 API调用，deviceId：{} ，channelId：{} ，command：{} ，speed：{} ",
                     serial, code, command, speed);
         }
+        if (channel == null) {channel = 0;}
+        if (speed == null) {speed = 0;}
         Device device = storager.queryVideoDevice(serial);
         if (device == null) {
             JSONObject result = new JSONObject();