[gnome-shell] System: update lock screen at construction

[Giovanni Campagna <gcampagna src gnome org>]

commit 8327dbd6111a3a5a411bb00b646fd38225aaba91
Author: Giovanni Campagna <gcampagna gnome org>
Date:   Fri Mar 20 12:57:30 2015 -0700

    System: update lock screen at construction
    
    Will make sure that change notifications are enabled by reading
    the value at least once
    
    https://bugzilla.gnome.org/show_bug.cgi?id=746509

 js/ui/status/system.js |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/js/ui/status/system.js b/js/ui/status/system.js
index f5873b8..7e3ceec 100644
--- a/js/ui/status/system.js
+++ b/js/ui/status/system.js
@@ -125,6 +125,7 @@ const Indicator = new Lang.Class({
                                 Lang.bind(this, this._updateMultiUser));
         this._updateSwitchUser();
         this._updateMultiUser();
+        this._updateLockScreen();
 
         // Whether shutdown is available or not depends on both lockdown
         // settings (disable-log-out) and Polkit policy - the latter doesn't