From 0fe33f925a26c5004080a0102e6665fc8012a67d Mon Sep 17 00:00:00 2001
From: Ahmad Sherif <me@ahmadsherif.com>
Date: Wed, 21 Sep 2016 15:46:31 +0200
Subject: [PATCH] Revert "Fix a memory leak caused by
 Banzai::Filter::SanitizationFilter"

This reverts commit 504a3b5e6f0b2e2957cf1e4d9d8eebbf32234bdb.
---
 lib/banzai/filter/sanitization_filter.rb | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/lib/banzai/filter/sanitization_filter.rb b/lib/banzai/filter/sanitization_filter.rb
index 6e13282d5f4..ca80aac5a08 100644
--- a/lib/banzai/filter/sanitization_filter.rb
+++ b/lib/banzai/filter/sanitization_filter.rb
@@ -7,7 +7,7 @@ module Banzai
       UNSAFE_PROTOCOLS = %w(data javascript vbscript).freeze
 
       def whitelist
-        whitelist = super.dup
+        whitelist = super
 
         customize_whitelist(whitelist)
 
@@ -42,8 +42,6 @@ module Banzai
         # Allow any protocol in `a` elements...
         whitelist[:protocols].delete('a')
 
-        whitelist[:transformers] = whitelist[:transformers].dup
-
         # ...but then remove links with unsafe protocols
         whitelist[:transformers].push(remove_unsafe_links)