channel groups: crash fix when channelId is null

Author: yuliskov

common/src/main/java/com/liskovsoft/smartyoutubetv2/common/app/presenters/dialogs/menu/providers/channelgroup/ChannelGroupMenuProvider.java

@@ -66,6 +66,10 @@ private void showGroupDialogAndFetchChannel(Video item, VideoMenuCallback callba
     }
 
     private void showGroupDialog(Video item, VideoMenuCallback callback) {
+        if (item == null || item.channelId == null) {
+            return;
+        }
+
         AppDialogPresenter dialogPresenter = AppDialogPresenter.instance(getContext());
 
         List<ItemGroup> groups = mService.getChannelGroups();
@@ -101,8 +105,6 @@ private void showGroupDialog(Video item, VideoMenuCallback callback) {
                     });
         }, false));
 
-        //options.add(AppDialogUtil.createSubscriptionsBackupButton(getContext()));
-
         for (ItemGroup group : groups) {
             options.add(UiOptionItem.from(group.getTitle(), optionItem -> {
                 BrowsePresenter presenter = BrowsePresenter.instance(getContext());