fix logic/declaration issue with modified PersistentTooltip API

diff --git a/gtk2_ardour/ardour_knob.cc b/gtk2_ardour/ardour_knob.cc
index 0397b85c7b0870e0f35e58f553d4bdf4f9f3b412..f2956115e1411d742254ea6c93705576c55c0a11 100644 (file)
--- a/gtk2_ardour/ardour_knob.cc
+++ b/gtk2_ardour/ardour_knob.cc
@@ -563,7 +563,7 @@ ArdourKnob::add_elements (Element e)
 
 
 KnobPersistentTooltip::KnobPersistentTooltip (Gtk::Widget* w)
-       : PersistentTooltip (w, 3)
+       : PersistentTooltip (w)
        , _dragging (false)
 {
 }