From cb6ad45e9dfe772361e9e350ce06c65e916e1af1 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Mon, 8 Mar 2021 17:13:08 +0100
Subject: [PATCH] Fix crash when CatchDeletion signal from self_delete arrives
 late

This is rather an unusual edge-case, seen on macOS when the UI
never continues past the first idle stage.
---
 gtk2_ardour/recorder_ui.cc | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/gtk2_ardour/recorder_ui.cc b/gtk2_ardour/recorder_ui.cc
index 1ec5ebde36..3cfe4d1039 100644
--- a/gtk2_ardour/recorder_ui.cc
+++ b/gtk2_ardour/recorder_ui.cc
@@ -908,9 +908,10 @@ RecorderUI::remove_route (TrackRecordAxis* ra)
 		return;
 	}
 	list<TrackRecordAxis*>::iterator i = find (_recorders.begin (), _recorders.end (), ra);
-	assert (i != _recorders.end ());
-	_rec_area.remove (**i);
-	_recorders.erase (i);
+	if (i != _recorders.end ()) {
+		_rec_area.remove (**i);
+		_recorders.erase (i);
+	}
 	update_rec_table_layout ();
 }