fix:删除bug

services/sys_department.go

@@ -32,6 +32,9 @@ func DeleteSysDepartmentById(sysDepartmentId, level int) (err error) {
 	for i := level; i < 3; i++ {
 		// 从当前层部门依次向下遍历子部门
 		curStringIds = strings.Join(curIds, ",")
+		if curStringIds == "" {
+			break
+		}
 		sysDepartments, er := models.GetChildSysDepartmentListByIds(curStringIds)
 
 		if er != nil {