From d72ffc13fa45d063b0782a1f780857950d1e5583 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Felix=20Bu=CC=88nemann?= <buenemann@louis.info>
Date: Mon, 30 Oct 2017 13:17:19 +0100
Subject: [PATCH] Fix Ruby < 2.1 compatibility of IO::Hash#to_h

---
 lib/xlsxtream/io/hash.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/xlsxtream/io/hash.rb b/lib/xlsxtream/io/hash.rb
index e402c1c..2574f66 100644
--- a/lib/xlsxtream/io/hash.rb
+++ b/lib/xlsxtream/io/hash.rb
@@ -38,7 +38,7 @@ def [](path)
       end
 
       def to_h
-        @hash.keys.map {|path| [path, fetch(path)] }.to_h
+        ::Hash[@hash.keys.map {|path| [path, fetch(path)] }]
       end
     end
   end