IndexOutOfBoundsException 修正

feature/home/src/main/java/one/nem/lacerta/feature/home/HomeTopFragment.java

@@ -94,9 +94,12 @@ public class HomeTopFragment extends Fragment {
         recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
 
         lacertaLibrary.getRecentDocument(10).thenAccept(listItems -> {
+            if (listItems == null) {
+                return;
+            }
             listItemAdapter.setListItems(listItems);
             getActivity().runOnUiThread(() -> {
-                listItemAdapter.notifyItemRangeInserted(0, listItems.size());
+                listItemAdapter.notifyItemRangeInserted(0, listItems.size() - 1);
             });
         });
     }

feature/home/src/main/java/one/nem/lacerta/feature/home/ListItemAdapter.java

@@ -54,7 +54,7 @@ public class ListItemAdapter extends RecyclerView.Adapter<ListItemAdapter.ListIt
 
     @Override
     public int getItemCount() {
-        return listItems.size();
+        return listItems == null ? 0 : listItems.size();
     }
 
     public static class ListItemViewHolder extends RecyclerView.ViewHolder{