Don't crash when keyeditor is empty

diff --git a/gtk2_ardour/keyeditor.cc b/gtk2_ardour/keyeditor.cc
index 8c4aaa191115fa6301a111c3a871b07245eaef48..56044c1c9a2cab2de3d22d50bfad0b6bd5d69efb 100644 (file)
--- a/gtk2_ardour/keyeditor.cc
+++ b/gtk2_ardour/keyeditor.cc
@@ -496,5 +496,8 @@ void
 KeyEditor::search_string_updated (const std::string& filter)
 {
        filter_string = boost::to_lower_copy(filter);
-       current_tab ()->filter->refilter ();
+       KeyEditor::Tab* tab = current_tab ();
+       if (tab) {
+               tab->filter->refilter ();
+       }
 }