$NetBSD: patch-ba,v 1.4 2010/04/16 11:45:27 wiz Exp $

http://bugreports.qt.nokia.com/browse/QTBUG-6932

--- src/gui/graphicsview/qgraphicsitem_p.h.orig	2010-02-11 15:55:22.000000000 +0000
+++ src/gui/graphicsview/qgraphicsitem_p.h
@@ -678,7 +678,7 @@ inline bool qt_closestItemFirst(const QG
     // item1Ancestor is now at the same level as item2Ancestor, but not the same.
     const QGraphicsItem *p1 = t1;
     const QGraphicsItem *p2 = t2;
-    while (t1 && t1 != t2) {
+    while (t1 && t2 && t1 != t2) {
         p1 = t1;
         p2 = t2;
         t1 = t1->d_ptr->parent;
