[FIX]Fixed the issue of duplicated one2many lines, weired behavior when you add one2many line and then add another line withour filling required field and then click on save, then remove added one2many line for which we didn't filled required data and then save it, you will get duplicated lines.

bzr revid: msh@tinyerp.com-20140403070844-6ogpdursukue2zoh

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

@@ -620,6 +620,9 @@ instance.web.FormView = instance.web.View.extend(instance.web.form.FieldManagerM
                         });
                     }
                     return $.when();
+                }).fail(function() {
+                    self.save_list.pop();
+                    return $.when();
                 });
             };
             return iterate();