设备初始状态变更为在线时，不记录变更日志

share-system/src/main/java/share/system/service/impl/MqttxServiceImpl.java

@@ -598,7 +598,7 @@ public class MqttxServiceImpl implements MqttxService {
                             }
                         }
                     }
-                    if (dev != null && !status.equals(dev.getStatus())) {
+                    if (dev != null && StrUtil.isNotEmpty(dev.getStatus()) && !status.equals(dev.getStatus())) {
                         DeviceStatusLog deviceStatusLog = new DeviceStatusLog();
                         deviceStatusLog.setDevId(devId);
                         deviceStatusLog.setDevMac(dev.getDevMac());