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-rw-r--r--libs/ardour/midi_ui.cc4
1 files changed, 4 insertions, 0 deletions
diff --git a/libs/ardour/midi_ui.cc b/libs/ardour/midi_ui.cc
index 06940c1e34..97dfdce6bf 100644
--- a/libs/ardour/midi_ui.cc
+++ b/libs/ardour/midi_ui.cc
@@ -52,7 +52,11 @@ MidiControlUI::MidiControlUI (Session& s)
MidiControlUI::~MidiControlUI ()
{
+ /* stop the thread */
+ quit ();
+ /* drop all ports as GIO::Sources */
clear_ports ();
+ /* we no longer exist */
_instance = 0;
}