When collapsing nodes that made the scrollbar bigger, it didnt became smaller. I...

When collapsing nodes that made the scrollbar bigger, it didnt became smaller. I've debugged on event() method to find out which event was the one called. It seems
QEvent::MetaCall is always called when we want and is not as impressive called as paintEvent(), so there we go. This will fix another problem that when a second expanded
cached node should make the horizontal scrollbar bigger it didn't till the tree view lost the focus or was resized. Everything fixed :)

CCMAIL: peter.penz@gmx.at

svn path=/trunk/KDE/kdebase/apps/; revision=749049