fix NPE in Settings.tick with null container

fixes crash when opening settings for modules without settings

Author: noramibu

src/main/java/meteordevelopment/meteorclient/settings/Settings.java

@@ -128,6 +128,8 @@ else if (setting instanceof ColorListSetting) {
     }
 
     public void tick(WContainer settings, GuiTheme theme) {
+        if (settings == null) return;
+
         for (SettingGroup group : groups) {
             for (Setting<?> setting : group) {
                 boolean visible = setting.isVisible();