[gnome-shell/uajain/adapt-user-avatar-part2: 25/39] loginDialog: Set null user when asking for username

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit c458376e7da357d26a437d0175631ea17224cd0f
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Thu Feb 6 16:24:32 2020 -0300

    loginDialog: Set null user when asking for username
    
    When going through the username + password login flow, set
    the username to 'null' to update the user avatar.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/922

 js/gdm/loginDialog.js | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/js/gdm/loginDialog.js b/js/gdm/loginDialog.js
index 1c28b37687..0d164ffac3 100644
--- a/js/gdm/loginDialog.js
+++ b/js/gdm/loginDialog.js
@@ -913,6 +913,7 @@ var LoginDialog = GObject.registerClass({
     }
 
     _askForUsernameAndBeginVerification() {
+        this._authPrompt.setUser(null);
         this._authPrompt.setQuestion(_("Username: "));
 
         this._showRealmLoginHint(this._realmManager.loginFormat);