From 06d2502d2afef8fed651f6f50f6017d72de4aaf1 Mon Sep 17 00:00:00 2001
From: Marco Martin <notmart@gmail.com>
Date: Tue, 3 Nov 2009 13:09:41 +0000
Subject: [PATCH] check the cast success: crash--

svn path=/trunk/KDE/kdelibs/; revision=1044329
---
 containment.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/containment.cpp b/containment.cpp
index dd4666cf1..c97bed789 100644
--- a/containment.cpp
+++ b/containment.cpp
@@ -2170,7 +2170,9 @@ void ContainmentPrivate::containmentConstraintsEvent(Plasma::Constraints constra
                 toolBox->setVisible(unlocked);
             } else {
                 InternalToolBox *internalToolBox = qobject_cast<InternalToolBox *>(toolBox);
-                internalToolBox->setIsMovable(unlocked);
+                if (internalToolBox) {
+                    internalToolBox->setIsMovable(unlocked);
+                }
             }
         }