Fixes #767

Author: dcwhite

src/Interface/Application/Connection.cc

@@ -365,7 +365,7 @@ void ConnectionLine::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* event)
   if (action && action->text() == deleteAction)
   {
     scene()->removeItem(this);
-    destroy();
+    destroy(); //TODO: another place to hook up deleteLater()
   }
   else if (action && action->text() == editNotesAction)
   {

src/Interface/Application/Port.cc

@@ -371,6 +371,7 @@ void PortWidget::addConnection(ConnectionLine* c)
 
 void PortWidget::removeConnection(ConnectionLine* c)
 {
+  disconnect(c);
   connections_.erase(c);
   if (connections_.empty())
     setConnected(false);