test: client should destroy (#5353)

Co-authored-by: Adrian Paschkowski <leiter04@gmail.com>

test/createGuild.js

@@ -24,9 +24,10 @@ client.on('ready', async () => {
     assert.strictEqual(guild.afkTimeout, 60);
     assert.strictEqual(guild.systemChannel.name, 'system-channel');
     await guild.delete();
-    client.destroy();
   } catch (error) {
     console.error(error);
+  } finally {
+    client.destroy();
   }
 });