Removed crashes when not using themes.

Removed much flicker form tree ctrl and list ctrl.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5245 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/listctrl.cpp

@@ -1168,6 +1168,8 @@ wxListMainWindow::~wxListMainWindow()
 
 void wxListMainWindow::RefreshLine( wxListLineData *line )
 {
+    if (m_dirty) return;
+    
     int x = 0;
     int y = 0;
     int w = 0;