Fixed layout for customer authentication popup

Author: rogyar

app/code/Magento/Customer/view/frontend/web/template/authentication-popup.html

@@ -78,7 +78,6 @@
                     <!-- ko foreach: getRegion('additional-login-form-fields') -->
                     <!-- ko template: getTemplate() --><!-- /ko -->
                     <!-- /ko -->
-                    </div>
                     <div class="actions-toolbar">
                         <input name="context" type="hidden" value="checkout" />
                         <div class="primary">