[gnome-shell/gnome-3-16] gdm: clear user verifier when finished with it

[Ray Strode <halfline src gnome org>]

commit 53b25fa5afca94c888401eb19a86990aeeef1a33
Author: Ray Strode <rstrode redhat com>
Date:   Mon Aug 3 14:07:17 2015 -0400

    gdm: clear user verifier when finished with it
    
    We only need the user verifier for the purpose of user verification.
    Once it's complete we should clear it so it doesn't get in the way
    later.
    
    This fixes a bug introduced in commit 3c8c5a557059 that leads to the
    user session crashing when the login screen is reactivated.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=753181

 js/gdm/authPrompt.js |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/js/gdm/authPrompt.js b/js/gdm/authPrompt.js
index b57b00b..c6ed601 100644
--- a/js/gdm/authPrompt.js
+++ b/js/gdm/authPrompt.js
@@ -489,6 +489,7 @@ const AuthPrompt = new Lang.Class({
 
     finish: function(onComplete) {
         if (!this._userVerifier.hasPendingMessages) {
+            this._userVerifier.clear();
             onComplete();
             return;
         }
@@ -496,6 +497,7 @@ const AuthPrompt = new Lang.Class({
         let signalId = this._userVerifier.connect('no-more-messages',
                                                   Lang.bind(this, function() {
                                                       this._userVerifier.disconnect(signalId);
+                                                      this._userVerifier.clear();
                                                       onComplete();
                                                   }));
     },