From e20d74079a18c40c96a6c2eb06507419a8c7dddf Mon Sep 17 00:00:00 2001
From: Tim Mayberry <mojofunk@gmail.com>
Date: Mon, 10 Aug 2015 21:33:59 +1000
Subject: [PATCH] Remove Unwinder instance from
 EngineControl::set_driver_popdown_strings

Not necessary now that signal emission is blocked via backend_changed()
---
 gtk2_ardour/engine_dialog.cc | 1 -
 1 file changed, 1 deletion(-)

diff --git a/gtk2_ardour/engine_dialog.cc b/gtk2_ardour/engine_dialog.cc
index 16114f2577..8ccb27d3d6 100644
--- a/gtk2_ardour/engine_dialog.cc
+++ b/gtk2_ardour/engine_dialog.cc
@@ -933,7 +933,6 @@ EngineControl::set_driver_popdown_strings ()
 			current_driver = drivers.front ();
 	}
 
-	PBD::Unwinder<uint32_t> protect_ignore_changes (ignore_changes, ignore_changes + 1);
 	set_popdown_strings (driver_combo, drivers);
 	DEBUG_ECONTROL (
 			string_compose ("driver_combo.set_active_text: %1", current_driver));