someone forgot to clear the m_needUpdating flag, so Splitter-Windows were always redrawn after the first sash move in the OnIdle function, even after the dragging was over\!

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6641 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/splitter.cpp

@@ -288,6 +288,8 @@ void wxSplitterWindow::OnMouseEvent(wxMouseEvent& event)
             SetCursor(* wxSTANDARD_CURSOR);
         }
 #endif // __WXGTK__
+
+        m_needUpdating = FALSE;
     }
     else if (event.Dragging() && (m_dragMode == wxSPLIT_DRAG_DRAGGING))
     {