added null cast check

diff --git a/lib/as3/ok/class1.as b/lib/as3/ok/class1.as
index 8df6207..1a6bab4 100644 (file)
--- a/lib/as3/ok/class1.as
+++ b/lib/as3/ok/class1.as
@@ -1,5 +1,7 @@
 package test1 {
+
     public class Main extends flash.display.MovieClip {
+        var x:Main=null;
         function Main() {
             trace("ok");
             trace("[exit]");