From c4c0ab7789e41fbde18791efa932368533c82426 Mon Sep 17 00:00:00 2001
From: Doug Kearns <dougkearns@gmail.com>
Date: Sat, 11 Jun 2011 19:17:29 +1000
Subject: [PATCH] Don't store duplicate site-filters when appending to styles.

--HG--
extra : rebase_source : aefc07675ea287d3b8d51c8fc56ecc14730b7c30
---
 common/modules/styles.jsm | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/common/modules/styles.jsm b/common/modules/styles.jsm
index c12b6e18..f5d24fdd 100644
--- a/common/modules/styles.jsm
+++ b/common/modules/styles.jsm
@@ -561,9 +561,8 @@ var Styles = Module("Styles", {
                     if (args["-append"]) {
                         let sheet = args["-group"].get(args["-name"]);
                         if (sheet) {
-                            filter = sheet.sites.concat(filter).join(",");
+                            filter = array(sheet.sites).concat(filter).uniq().join(",");
                             css = sheet.css + " " + css;
-
                         }
                     }
                     let style = args["-group"].add(args["-name"], filter, css, args["-agent"]);