Update portal-ui/src/screens/Console/Tenants/TenantDetails/TenantDetails.tsx

Co-authored-by: Alex <33497058+bexsoft@users.noreply.github.com>

Author: dvaldivia

portal-ui/src/screens/Console/Tenants/TenantDetails/TenantDetails.tsx

@@ -154,7 +154,7 @@ const TenantDetails = ({ classes, match }: ITenantDetailsProps) => {
         setZoneCount(res.zone_count);
         setVolumes(res.volume_count);
         setInstances(res.instance_count);
-        const resZones = res.zones !== null ? res.zones : [];
+        const resZones = !res.zones ? [] : res.zones;
         for (let zone of resZones) {
           zone.volumes = res.volumes_per_server;
           const cap = res.volumes_per_server * res.volume_size * zone.servers;