Fixes view of sub-channel icon when not in use

Author: Jaspann

app/src/main/java/org/schabi/newpipe/fragments/detail/VideoDetailFragment.java

@@ -1648,6 +1648,11 @@ private void displayUploaderAsSubChannel(final StreamInfo info) {
         binding.detailSubChannelTextView.setVisibility(View.VISIBLE);
         binding.detailSubChannelTextView.setSelected(true);
         binding.detailUploaderTextView.setVisibility(View.GONE);
+
+        //No sub-channel name implies no sub-channel icon, but check just to make sure.
+        if(isEmpty(info.getSubChannelAvatarUrl())){
+            binding.detailSubChannelThumbnailView.setVisibility(View.GONE);
+        }
     }
 
     private void displayBothUploaderAndSubChannel(final StreamInfo info) {