make the leftmost mixer stripable API at least work as advertised

diff --git a/libs/surfaces/control_protocol/control_protocol.cc b/libs/surfaces/control_protocol/control_protocol.cc
index 675294bbd98bb46541f387e421e87d712edc0fdd..311c2d108172de9299ce05abfa06d93312d8ffcb 100644 (file)
--- a/libs/surfaces/control_protocol/control_protocol.cc
+++ b/libs/surfaces/control_protocol/control_protocol.cc
@@ -59,6 +59,7 @@ PBD::Signal1<void,StripableNotificationListPtr> ControlProtocol::StripableSelect
 
 Glib::Threads::Mutex ControlProtocol::special_stripable_mutex;
 boost::weak_ptr<Stripable> ControlProtocol::_first_selected_stripable;
+boost::weak_ptr<Stripable> ControlProtocol::_leftmost_mixer_stripable;
 StripableNotificationList ControlProtocol::_last_selected;
 bool ControlProtocol::selection_connected = false;
 PBD::ScopedConnection ControlProtocol::selection_connection;
@@ -354,14 +355,14 @@ boost::shared_ptr<Stripable>
 ControlProtocol::leftmost_mixer_stripable ()
 {
        Glib::Threads::Mutex::Lock lm (special_stripable_mutex);
-       return _first_selected_stripable.lock();
+       return _leftmost_mixer_stripable.lock();
 }
 
 void
 ControlProtocol::set_leftmost_mixer_stripable (boost::shared_ptr<Stripable> s)
 {
        Glib::Threads::Mutex::Lock lm (special_stripable_mutex);
-       _first_selected_stripable = s;
+       _leftmost_mixer_stripable = s;
 }
 
 void