[gnome-documents] preview: The menu icon name changed to open-menu-symbolic

[Debarshi Ray <debarshir src gnome org>]

commit 41ef50c368b0b74e3476573060a0693a6a66f97c
Author: Daniel Mustieles <dnaiel mustieles gmail com>
Date:   Wed Jul 9 17:43:28 2014 +0200

    preview: The menu icon name changed to open-menu-symbolic
    
    https://bugzilla.gnome.org/show_bug.cgi?id=732953

 src/preview.js |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/preview.js b/src/preview.js
index aaacd1b..c5234ae 100644
--- a/src/preview.js
+++ b/src/preview.js
@@ -804,7 +804,7 @@ const PreviewToolbar = new Lang.Class({
         let previewMenu = this._getPreviewMenu();
         let menuButton = new Gd.HeaderMenuButton({ menu_model: previewMenu,
                                                    action_name: 'app.gear-menu',
-                                                   symbolic_icon_name: 'emblem-system-symbolic' });
+                                                   symbolic_icon_name: 'open-menu-symbolic' });
         this.toolbar.pack_end(menuButton);
 
         // search button, on the right of the toolbar