Reset idle_handler_id (fixes idle zoom -- bug in 265f52535a7)

If pending_visual_change.pending was zero when calling idle_visual_changer
the handler_id was never reset. and the idle-handler was never called
again.

diff --git a/gtk2_ardour/editor.cc b/gtk2_ardour/editor.cc
index 9095152f772644bd8cb8b6cb9a112c62a6b9dd2a..9750f58e9d50cbbeb16f8800fe5b62487ece5866 100644 (file)
--- a/gtk2_ardour/editor.cc
+++ b/gtk2_ardour/editor.cc
@@ -4596,6 +4596,8 @@ Editor::pre_render ()
 int
 Editor::idle_visual_changer ()
 {
+       pending_visual_change.idle_handler_id = -1;
+
        if (pending_visual_change.pending == 0) {
                return 0;
        }
@@ -4610,8 +4612,6 @@ Editor::idle_visual_changer ()
           the last one.
        */
 
-       pending_visual_change.idle_handler_id = -1;
-
        if (visual_change_queued) {
                return 0;
        }