tpool cleanup

CHANGES

@@ -19,6 +19,7 @@ OpenLDAP 2.3.22 Engineering
 	Fixed slurpd potential overflow issue
 	Fixed slapo-translucent modifications
 	Fixed libldap_r thread debug missing break
+	Fixed libldap_r tpool cleanup
 
 OpenLDAP 2.3.21 Release
 	Fixed libldap referral chasing issue (ITS#4448)

libraries/libldap_r/tpool.c

@@ -111,7 +111,6 @@ ldap_int_thread_pool_shutdown ( void )
 	struct ldap_int_thread_pool_s *pool;
 
 	while ((pool = LDAP_STAILQ_FIRST(&ldap_int_thread_pool_list)) != NULL) {
-		LDAP_STAILQ_REMOVE_HEAD(&ldap_int_thread_pool_list, ltp_next);
 		(ldap_pvt_thread_pool_destroy)(&pool, 0); /* ignore thr_debug macro */
 	}
 	ldap_pvt_thread_mutex_destroy(&ldap_pvt_thread_pool_mutex);