完善业务系统属性值获取逻辑

src/JiShe.IoT.Application/BusinessSystemAggregation/BusinessSystemAggregationService.cs

@@ -235,7 +235,7 @@ namespace JiShe.IoT.BusinessSystemAggregation
                         return HttpDataResultExtensions.Failed<Dictionary<string, object>>($"业务系统推送指令时设备{deviceInfo.DeviceAddress}的平台端物模型信息不存在。", -107, ResponeResultEnum.Fail);
                     }
 
-                    Dictionary<string, object> commands = new Dictionary<string, object>;
+                    Dictionary<string, object> commands = new Dictionary<string, object>();
                     foreach (var item in messageBody.Commands)
                     {
                         var tempPlatformThingModelInfo = platformThingModelInfo.Where(d => d.StandardFieldName == item.Key).FirstOrDefault();