LeakSanitizer: detected memory leaks on spider/odbc/pg suite

> ./mysql-test/mtr spider/odbc/pg.basic_sql

....

MariaDB Version 10.4.26-17-MariaDB-debug

 - SSL connections supported

 - binaries are debug compiled

 - binaries built with wsrep patch

Collecting tests...

Installing system database...

==============================================================================

TEST                                      RESULT   TIME (ms) or COMMENT

--------------------------------------------------------------------------

worker[1] Using MTR_BUILD_THREAD 300, with reserved ports 16000..16019

spider/odbc/pg.basic_sql                 [ pass ]   3185

***Warnings generated in error logs during shutdown after running tests: spider/odbc/pg.basic_sql

==148932==ERROR: LeakSanitizer: detected memory leaks

SUMMARY: AddressSanitizer: 7646314 byte(s) leaked in 3204 allocation(s).

--------------------------------------------------------------------------

The servers were restarted 0 times

Spent 3.185 of 8 seconds executing testcases

Warnings in log: All 1 tests were successful.

Errors/warnings were found in logfiles during server shutdown after running the

following sequence(s) of tests:

    spider/odbc/pg.basic_sql

mysql-test-run: *** ERROR: There where errors/warnings in server logs after running test cases.