[gnome-shell] A11yStatus: fix resetting the GTK and icon themes

[Giovanni Campagna <gcampagna src gnome org>]

commit a4d3a57a1cb79209f8e2c7b4e777542d74b5ae12
Author: Giovanni Campagna <gcampagna src gnome org>
Date:   Fri Feb 18 16:15:35 2011 +0100

    A11yStatus: fix resetting the GTK and icon themes
    
    If the Shell is started with HighContrast enabled, it will never
    see another value for the GSettings keys. In that case, we just
    reset to the default.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=642641

 js/ui/status/accessibility.js |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/js/ui/status/accessibility.js b/js/ui/status/accessibility.js
index b5b6cdb..af50370 100644
--- a/js/ui/status/accessibility.js
+++ b/js/ui/status/accessibility.js
@@ -168,9 +168,12 @@ ATIndicator.prototype = {
                 if (enabled) {
                     settings.set_string(KEY_GTK_THEME, HIGH_CONTRAST_THEME);
                     settings.set_string(KEY_ICON_THEME, HIGH_CONTRAST_THEME);
-                } else {
+                } else if(!hasHC) {
                     settings.set_string(KEY_GTK_THEME, gtkTheme);
                     settings.set_string(KEY_ICON_THEME, iconTheme);
+                } else {
+                    settings.reset(KEY_GTK_THEME);
+                    settings.reset(KEY_ICON_THEME);
                 }
             });
         settings.connect('changed::' + KEY_GTK_THEME, function() {