Commited a possible fix to the screen update bug.

git-svn-id: svn://rakshasa.no/libtorrent/trunk/rtorrent@258 e378c898-3ddf-0310-93e7-cc216c733640

src/display/canvas.h

@@ -66,6 +66,9 @@ public:
 		  A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6)    { mvwprintw(m_window, y, x, str, a1, a2, a3, a4, a5, a6); }
 
 private:
+  Canvas(const Canvas&);
+  void operator = (const Canvas&);
+
   WINDOW*   m_window;
 };