[WIP] check mem leak for dewu

[trueeyu]

What type of PR is this：

• [ ] BugFix
• [ ] Feature
• [ ] Enhancement
• [ ] Refactor
• [ ] UT
• [ ] Doc
• [ ] Tool

Which issues of this PR fixes ：

Fixes #

Problem Summary(Required) ：

Checklist:

• [ ] I have added test cases for my bug fix or my new feature
• [ ] I have added user document for my new feature or new function

[trueeyu]

run starrocks_fe_unittest