fix incremental layout strategy bug

TODO.FACTOR.txt

@@ -10,7 +10,6 @@
 - nicer scrollbars with up/down buttons
 - gaps in pack layout
 - fix listener prompt display after presentation commands invoked
-- stack display bugs
 - tutorial: clickable code snippets
 - parser::skip clean up
 

library/ui/incremental.factor

@@ -36,7 +36,7 @@ M: incremental layout* drop ;
     swap set-rectangle-loc ;
 
 : prefer-incremental ( gadget -- )
-    dup pref-dim swap set-rectangle-dim ;
+    dup pref-dim over set-rectangle-dim layout ;
 
 : add-incremental ( gadget incremental -- )
     2dup (add-gadget)