From daa9cc1ed445e95f523f122eb383f7853fcd38df Mon Sep 17 00:00:00 2001
From: Přemysl Janouch <p@janouch.name>
Date: Tue, 2 Oct 2018 23:18:22 +0200
Subject: Mark a variable const

---
 pdf-simple-sign.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pdf-simple-sign.cpp b/pdf-simple-sign.cpp
index e18c058..ec2e6ae 100644
--- a/pdf-simple-sign.cpp
+++ b/pdf-simple-sign.cpp
@@ -562,7 +562,7 @@ pdf_object pdf_updater::get(uint n, uint generation) const {
   if (n >= xref_size)
     return {pdf_object::NIL};
 
-  auto& ref = xref[n];
+  const auto& ref = xref[n];
   if (ref.free || ref.generation != generation || ref.offset >= document.length())
     return {pdf_object::NIL};
 
-- 
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