try another fix for the crash created by rev 13547

git-svn-id: svn://localhost/ardour2/branches/3.0@13554 d708f5d6-7413-0410-9779-e7cbd77b26cf

gtk2_ardour/editor.cc

@@ -4247,6 +4247,8 @@ Editor::idle_visual_changer ()
 	   super-rapid-screen-update can be dropped if we are still processing
 	   the last one.
 	*/
+	cerr << "EDITOR:: IDLE VISUAL CHANGE\n";
+
 	pending_visual_change.idle_handler_id = -1;
 	pending_visual_change.being_handled = true;
 	

gtk2_ardour/editor_summary.cc

@@ -562,8 +562,9 @@ EditorSummary::on_motion_notify_event (GdkEventMotion* ev)
 			y = 0;
 		}
 
+		cerr << "Motion notify => " << x << ", " << y << endl;
 		set_editor (x, y);
-		set_cursor (_start_position);
+		// set_cursor (_start_position);
 
 	} else if (_zoom_dragging) {
 
@@ -688,6 +689,8 @@ EditorSummary::set_editor (double const x, double const y)
 		   as it also means that we won't change these variables if an idle handler
 		   is merely pending but not executing.  But c'est la vie.
 		*/
+		
+		cerr << "Editor pending idle already queued\n";
 
 		return;
 	}

gtk2_ardour/mixer_strip.cc

@@ -1731,6 +1731,7 @@ MixerStrip::meter_point_string (MeterPoint mp)
 		break;
 	}
 
+	return string();
 }
 
 /** Called when the metering point has changed */