screenShield: fix lifting when inserting smartcard

If a user inserts the smartcard they logged in with into the system,
it's supposed to lift the shield and prompt for pin.  That doesn't
happen because the parameter list of the smartcard-inserted signal
handler is wrong.

This commit fixes that.

https://bugzilla.gnome.org/show_bug.cgi?id=726262

js/ui/screenShield.js

@@ -537,7 +537,7 @@ const ScreenShield = new Lang.Class({
 
         this._smartcardManager = SmartcardManager.getSmartcardManager();
         this._smartcardManager.connect('smartcard-inserted',
-                                       Lang.bind(this, function(token) {
+                                       Lang.bind(this, function(manager, token) {
                                            if (this._isLocked && token.UsedToLogin)
                                                this._liftShield(true, 0);
                                        }));