Don't purge log entries if a shutdown was requested

CHANGES

@@ -3,6 +3,7 @@ OpenLDAP 2.3 Change Log
 OpenLDAP 2.3.26 Engineering
 	Fixed libldap dnssrv bug with "not present" positive statement (ITS#4610)
 	Fixed slapd incorrect rebuilding of replica URI (ITS#4633)
+	Fixed slapo-accesslog purge task during shutdown
 	Fixed slapo-ppolicy handling of default policy (ITS#4634)
 	Fixed slapo-ppolicy logging verbosity when using default policy
 	Fixed back-monitor operations order via callbacks (ITS#4631)

servers/slapd/overlays/accesslog.c

@@ -493,6 +493,8 @@ log_old_lookup( Operation *op, SlapReply *rs )
 
 	if ( rs->sr_type != REP_SEARCH) return 0;
 
+	if ( slapd_shutdown ) return 0;
+
 	if ( pd->used >= pd->slots ) {
 		pd->slots += PURGE_INCREMENT;
 		pd->dn = ch_realloc( pd->dn, pd->slots * sizeof( struct berval ));
@@ -565,7 +567,8 @@ accesslog_purge( void *ctx, void *arg )
 		for (i=0; i<pd.used; i++) {
 			op->o_req_dn = pd.dn[i];
 			op->o_req_ndn = pd.ndn[i];
-			op->o_bd->be_delete( op, &rs );
+			if ( !slapd_shutdown )
+				op->o_bd->be_delete( op, &rs );
 			ch_free( pd.ndn[i].bv_val );
 			ch_free( pd.dn[i].bv_val );
 		}