fix visit list nil point

app/svc/advertising/svc_list.go

@@ -67,7 +67,9 @@ func VisitList(c *gin.Context) {
 			e.OutErr(c, e.ERR_DB_ORM, err.Error())
 			return
 		}
-		uid = utils.Int64ToStr(user.Id)
+		if user != nil {
+			uid = utils.Int64ToStr(user.Id)
+		}
 	}
 	req.Platform = strings.ReplaceAll(req.Platform, " ", "")
 	req.Type = strings.ReplaceAll(req.Type, " ", "")