Fixed two uninitialized reads on startup ({m_,}isShown)

svn path=/trunk/KDE/kdebase/workspace/; revision=1022869

tabbox.cpp

@@ -220,6 +220,7 @@ TabBox::TabBox( Workspace *ws )
     , wspace(ws)
     , display_refcount( 0 )
     {
+    m_isShown = false;
     m_defaultConfig = TabBoxConfig();
     m_defaultConfig.setTabBoxMode( TabBoxConfig::ClientTabBox );
     m_defaultConfig.setClientListMode( TabBoxConfig::CurrentDesktopClientList );

tabbox/tabboxhandler.cpp

@@ -91,6 +91,7 @@ class TabBoxHandlerPrivate
 
 TabBoxHandlerPrivate::TabBoxHandlerPrivate()
     {
+    isShown = false;
     config = TabBoxConfig();
     view = new TabBoxView();
     XSetWindowAttributes attr;