accommodate newer ncurses where panel_userptr() returns a const pointer ok stsp
diff --git a/tog/tog.c b/tog/tog.c
index 01ebf9b..9923204 100644
--- a/tog/tog.c
+++ b/tog/tog.c
@@ -936,7 +936,7 @@ void
view_vborder(struct tog_view *view)
{
PANEL *panel;
- struct tog_view *view_above;
+ const struct tog_view *view_above;
if (view->parent)
return view_vborder(view->parent);