From f620d6c25ef4d971a29e637e1a772cb5b12f2f26 Mon Sep 17 00:00:00 2001
From: Aaron Patterson <aaron.patterson@gmail.com>
Date: Tue, 21 Jul 2015 17:57:50 -0700
Subject: [PATCH] stop keeping track of keys when "deep munging"

This should have been done along with 8f8ccb9901cab457c6e1d52bdb25acf658fd5777
---
 actionpack/lib/action_dispatch/request/utils.rb | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/actionpack/lib/action_dispatch/request/utils.rb b/actionpack/lib/action_dispatch/request/utils.rb
index 1c9371d89c..8836ba6d59 100644
--- a/actionpack/lib/action_dispatch/request/utils.rb
+++ b/actionpack/lib/action_dispatch/request/utils.rb
@@ -7,19 +7,17 @@ class Utils # :nodoc:
 
       class << self
         # Remove nils from the params hash
-        def deep_munge(hash, keys = [])
+        def deep_munge(hash)
           return hash unless perform_deep_munge
 
           hash.each do |k, v|
-            keys << k
             case v
             when Array
-              v.grep(Hash) { |x| deep_munge(x, keys) }
+              v.grep(Hash) { |x| deep_munge(x) }
               v.compact!
             when Hash
-              deep_munge(v, keys)
+              deep_munge(v)
             end
-            keys.pop
           end
 
           hash
-- 
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