Merge branch '13.8'

services/data/correlation/chart_info.go

@@ -277,7 +277,7 @@ func GetChartDataByEdbInfo(edbInfoMappingA, edbInfoMappingB *models.ChartEdbInfo
 			changeDataList = tmpNewChangeDataList
 		} else {
 			changeDataList = bDataList
-			for _, v := range baseDataList {
+			for _, v := range bDataList {
 				changeDataMap[v.DataTime] = v.Value
 			}
 		}