[MDEV-26030] Warning: Memory not freed: 32 on setting wsrep_sst_auth - Jira

New regression after ~~MDEV-24509~~ fix.

DROP VIEW v;

CREATE TABLE t (a INT) ENGINE=InnoDB;

SET @@global.wsrep_sst_auth='abc';

SHUTDOWN;

Will lead to:

10.6.3 891a927e804c5a3a582f6137c2f316ef7abb25ca (Optimized)
2021-06-28 19:55:23 0 [Note] /test/MD280621-mariadb-10.6.3-linux-x86_64-opt/bin/mysqld: Shutdown complete

Warning: Memory not freed: 32

10.6.3 891a927e804c5a3a582f6137c2f316ef7abb25ca (Debug)
2021-06-28 19:53:37 0 [Note] /test/MD280621-mariadb-10.6.3-linux-x86_64-dbg/bin/mysqld: Shutdown complete

Warning: Memory not freed: 32
Warning: 32 bytes lost at 0x150e60008480, allocated by T@0 at mysys/my_malloc.c:233, sql/wsrep_sst.cc:249, sql/wsrep_sst.cc:291, sql/set_var.cc:208, sql/set_var.cc:863, sql/set_var.cc:745, sql/sql_parse.cc:5039, sql/sql_parse.cc:8028
Memory lost: 32 bytes in 1 chunks
Warning: 32 bytes lost at 0x150e60008480, allocated by T@0 at mysys/my_malloc.c:233, sql/wsrep_sst.cc:249, sql/wsrep_sst.cc:291, sql/set_var.cc:208, sql/set_var.cc:863, sql/set_var.cc:745, sql/sql_parse.cc:5039, sql/sql_parse.cc:8028
Memory lost: 32 bytes in 1 chunks

Issue present in optimized and debug builds from 10.4 to 10.6.

relates to

MDEV-24509 Warning: Memory not freed: 56 on SET @@global.wsrep_sst_auth

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