[gnome-shell] ShellUserVerifier: fix fail counter

[Giovanni Campagna <gcampagna src gnome org>]

commit b9463d23e88da8f6451254fc0f43f1614ce64cde
Author: Giovanni Campagna <gcampagna src gnome org>
Date:   Mon Oct 29 17:40:55 2012 +0100

    ShellUserVerifier: fix fail counter
    
    If it is updated after checking, it counts the number of failures
    not including the current one, so it allows one extra attempt. Instead,
    by updating it before checking, we get the expected result of dropping the
    curtain at the third password.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=687132

 js/gdm/util.js |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/js/gdm/util.js b/js/gdm/util.js
index da31daa..d71e55f 100644
--- a/js/gdm/util.js
+++ b/js/gdm/util.js
@@ -333,12 +333,11 @@ const ShellUserVerifier = new Lang.Class({
         // Otherwise, we allow ALLOWED_FAILURES attempts. After that, we
         // go back to the welcome screen.
 
+        this._failCounter++;
         let canRetry = retry && this._userName &&
             this._failCounter < this._settings.get_int(ALLOWED_FAILURES_KEY);
 
         if (canRetry) {
-            this._failCounter++;
-
             this.clear();
             this.begin(this._userName, new Batch.Hold());
         } else {