when the scrolbar visibility is udated activate the layout and do

resize, this should avoid the unnecessary horizontal scrollbar in the
microblog applet

svn path=/trunk/KDE/kdelibs/; revision=1002239

widgets/scrollwidget.cpp

@@ -81,6 +81,9 @@ public:
             layout->addItem(horizontalScrollBar, 1, 0);
             horizontalScrollBar->show();
         }
+
+        layout->activate();
+        widget->resize(scrollingWidget->size().width(), widget->size().height());
     }
 
     void verticalScroll(int value)
@@ -221,8 +224,6 @@ void ScrollWidget::resizeEvent(QGraphicsSceneResizeEvent *event)
 
     d->adjustClipping();
 
-    d->widget->resize(d->scrollingWidget->size());
-
     QGraphicsWidget::resizeEvent(event);
 }