zone: purge 'timers.catalog_member' only if catalog filter is specified

src/knot/zone/zone.c

@@ -278,7 +278,9 @@ int selective_zone_purge(conf_t *conf, zone_t *zone, purge_flag_t params)
 
 	// Purge the zone timers.
 	if (params & PURGE_ZONE_TIMERS) {
-		memset(&zone->timers, 0, sizeof(zone->timers));
+		zone->timers = (zone_timers_t) {
+			.catalog_member = zone->timers.catalog_member
+		};
 		ret = zone_timers_sweep(&zone->server->timerdb,
 		                        (sweep_cb)knot_dname_cmp, zone->name);
 		RETURN_IF_FAILED("timers", KNOT_ENOENT);
@@ -314,6 +316,7 @@ int selective_zone_purge(conf_t *conf, zone_t *zone, purge_flag_t params)
 
 	// Purge Catalog.
 	if (params & PURGE_ZONE_CATALOG) {
+		zone->timers.catalog_member = 0;
 		ret = catalog_zone_purge(zone->server, conf, zone->name);
 		RETURN_IF_FAILED("catalog", KNOT_EOK);
 	}