fix -Wsign-compare

diff --git a/gtk2_ardour/ardour_dropdown.cc b/gtk2_ardour/ardour_dropdown.cc
index 84c54489ec8a049560cd56eb40c1349f80fe8136..6ad1f7c11e2128b839a51306b872fb8d42d6bb6b 100644 (file)
--- a/gtk2_ardour/ardour_dropdown.cc
+++ b/gtk2_ardour/ardour_dropdown.cc
@@ -115,7 +115,7 @@ ArdourDropdown::on_scroll_event (GdkEventScroll* ev)
                                        continue;
                                }
                                if (++i != items.end()) {
-                                       assert(c + 1 < items.size());
+                                       assert(c + 1 < (int) items.size());
                                        _menu.set_active(c + 1);
                                        _menu.activate_item(*i);
                                }