Index: treeview.c
===================================================================
--- treeview.c	(revision 26465)
+++ treeview.c	(working copy)
@@ -2839,8 +2839,6 @@
 	}
     }
 
-    TREEVIEW_UpdateScrollBars(infoPtr);
-
     if (infoPtr->cdmode & CDRF_NOTIFYPOSTPAINT)
 	infoPtr->cdmode =
 	    TREEVIEW_SendCustomDrawNotify(infoPtr, CDDS_POSTPAINT, hdc, rect);