Fix flash data out encoding.

Author: guillaumebort

framework/src/play/mvc/Scope.java

@@ -52,7 +52,7 @@ static Flash restore() {
 
         void save() {
             try {
-                String flashData = CookieDataCodec.encode(data);
+                String flashData = CookieDataCodec.encode(out);
                 Http.Response.current().setCookie(COOKIE_PREFIX + "_FLASH", flashData, null, "/", null, COOKIE_SECURE);
             } catch (Exception e) {
                 throw new UnexpectedException("Flash serializationProblem", e);