[gnome-shell] iconGrid: Don't enter an infinite loop

[Jasper St. Pierre <jstpierre src gnome org>]

commit 27b34992c69d42a1725b8223c66b4c9f78a39aa5
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Sat Nov 19 15:27:36 2011 -0500

    iconGrid: Don't enter an infinite loop
    
    If both spacing and -shell-grid-item-size are 0, as they would be with nothing
    setting them, we enter an infinite loop where we try to compute the layout.
    Avoid the situation entirely by defaulting -shell-grid-item-size to a sane
    value instead of 0.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=662747

 js/ui/iconGrid.js |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/js/ui/iconGrid.js b/js/ui/iconGrid.js
index b93f6c0..f893d5d 100644
--- a/js/ui/iconGrid.js
+++ b/js/ui/iconGrid.js
@@ -305,7 +305,7 @@ const IconGrid = new Lang.Class({
     _onStyleChanged: function() {
         let themeNode = this.actor.get_theme_node();
         this._spacing = themeNode.get_length('spacing');
-        this._item_size = themeNode.get_length('-shell-grid-item-size');
+        this._item_size = themeNode.get_length('-shell-grid-item-size') || ICON_SIZE;
         this._grid.queue_relayout();
     },