[FIX]when discard modification and click on next record from pager again it gives warning.

lp bug: https://launchpad.net/bugs/997468 fixed

bzr revid: vja@vja-desktop-20120511095707-jsqixg5c87u7itd4

addons/web/static/src/js/view_form.js

@@ -546,6 +546,7 @@ instance.web.FormView = instance.web.View.extend(_.extend({}, instance.web.form.
     },
     on_button_cancel: function(event) {
         if (this.can_be_discarded()) {
+            this.on_record_loaded(this.datarecord);
             this.set({mode: "view"});
         }
         return false;