ideintf: collection editor, update buttons after deleting an item (issue #19090)

git-svn-id: trunk@32674 -

ideintf/collectionpropeditform.pas

@@ -261,6 +261,8 @@ begin
     else
       CollectionListBox.ItemIndex := CollectionListBox.Items.Count - 1;
   end;
+  UpdateButtons;
+  UpdateCaption;
 end;
 
 procedure TCollectionPropertyEditorForm.RefreshPropertyValues;