QmlDesigner.NodeInstances: Change Assert in exit

Change-Id: I9a19ab772db406b0b1e6f9b76b997dcee17bccbf
Reviewed-on: http://codereview.qt-project.org/5244
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@nokia.com>

share/qtcreator/qml/qmlpuppet/instances/nodeinstanceclientproxy.cpp

@@ -184,7 +184,10 @@ void NodeInstanceClientProxy::readDataStream()
         in >> command;
         m_blockSize = 0;
 
-        Q_ASSERT(in.status() == QDataStream::Ok);
+        if (in.status() != QDataStream::Ok) {
+            qWarning() << "Stream is no ok!!!";
+            exit(1);
+        }
 
         commandList.append(command);
     }