From 0d08f53d7081c5cc9383c16e49d89041faa6eff2 Mon Sep 17 00:00:00 2001
From: Adam Wick <awick@uhsure.com>
Date: Sat, 14 Apr 2018 06:59:49 -0700
Subject: [PATCH] Make sure we print 0.

---
 src/cryptonum/unsigned.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/cryptonum/unsigned.rs b/src/cryptonum/unsigned.rs
index c68b738..29565a5 100644
--- a/src/cryptonum/unsigned.rs
+++ b/src/cryptonum/unsigned.rs
@@ -342,6 +342,9 @@ impl fmt::UpperHex for UCN {
             fmt.write_char(tochar_upper(x >>  4))?;
             fmt.write_char(tochar_upper(x >>  0))?;
         }
+        if self.contents.len() == 0 {
+            fmt.write_char('0')?;
+        }
         Ok(())
     }
 }