From e5130877e76112fb5676841e4fb3e65baff647a3 Mon Sep 17 00:00:00 2001
From: "Owen W. Taylor" <otaylor@fishsoup.net>
Date: Wed, 9 Feb 2011 19:42:01 -0500
Subject: [PATCH] Avoid relayout when not changing the workspace reserved slot

Make calling workspace.setReservedSlot(null) do nothing if the slot was
already null; this improves efficiency and more importantly chills out some
weird reentrancy at the end of drag and drop that removes a window from
a workspace.
---
 js/ui/workspace.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/js/ui/workspace.js b/js/ui/workspace.js
index 0fa38d13b..0904913c0 100644
--- a/js/ui/workspace.js
+++ b/js/ui/workspace.js
@@ -921,6 +921,9 @@ Workspace.prototype = {
     },
 
     setReservedSlot: function(clone) {
+        if (this._reservedSlot == clone)
+            return;
+
         if (clone && this.containsMetaWindow(clone.metaWindow)) {
             this._reservedSlot = null;
             this.positionWindows(WindowPositionFlags.ANIMATE);