MW-399 Freeing wsrep_status_vars, before provider is released.
MW-399 Freeing wsrep_status_vars, before provider is released.

This is needed to clear THD::wsrep_status_vars reference,
which would otherwise remain to point to status variable array, which is no more effective.

natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2