[gnome-web-www] Also check the POST value in order for the field to remain editable even after an error is found and

[Andrea Veri <averi src gnome org>]

commit 4e5be0c60c5c6e1e8a36a85f2e10638b0f8ccc73
Author: Andrea Veri <av gnome org>
Date:   Thu Jun 6 19:25:57 2019 +0000

    Also check the POST value in order for the field to remain editable even after an error is found and 
reported

 theme/page-apply.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/theme/page-apply.php b/theme/page-apply.php
index ef0110a..492b456 100644
--- a/theme/page-apply.php
+++ b/theme/page-apply.php
@@ -103,8 +103,8 @@ if (array_key_exists('submit', $_POST)) {
   function toggleBenefitsFields() {
    var gnomeAlias = document.getElementById("gnome_mail_alias");
 
-   document.getElementById("gnome_username").disabled = !gnomeAlias.checked;
-   document.getElementById("gnome_jabber").disabled = !gnomeAlias.checked;
+   document.getElementById("gnome_username").disabled = (!gnomeAlias.checked || !isset($gnome_mail_alias)) ;
+   document.getElementById("gnome_jabber").disabled = (!gnomeAlias.checked || !isset($gnome_mail_alias));
 
    document.getElementById("jabber_label").className = (gnomeAlias.checked ? "" : "disabled-checkbox");
 }