- client: 2300 Fix block client bug when clients values are empty in …

…config

Close #2300

Squashed commit of the following:

commit 7222a03
Merge: 91b06b1 0919611
Author: Artem Baskal <a.baskal@adguard.com>
Date:   Mon Nov 16 12:46:26 2020 +0300

    Merge branch 'master' into fix/2300

commit 91b06b1
Author: Artem Baskal <a.baskal@adguard.com>
Date:   Fri Nov 13 15:12:31 2020 +0300

    - client: 2300 Fix block client bug when clients values are empty in config

client/src/actions/access.js

@@ -51,9 +51,10 @@ export const toggleClientBlockSuccess = createAction('TOGGLE_CLIENT_BLOCK_SUCCES
 export const toggleClientBlock = (ip, disallowed, disallowed_rule) => async (dispatch) => {
     dispatch(toggleClientBlockRequest());
     try {
-        const {
-            allowed_clients, blocked_hosts, disallowed_clients = [],
-        } = await apiClient.getAccessList();
+        const accessList = await apiClient.getAccessList();
+        const allowed_clients = accessList.allowed_clients ?? [];
+        const blocked_hosts = accessList.blocked_hosts ?? [];
+        const disallowed_clients = accessList.disallowed_clients ?? [];
 
         const updatedDisallowedClients = disallowed
             ? disallowed_clients.filter((client) => client !== disallowed_rule)