From 9b0109848b10a370e1a19c9d3789e048f1992f86 Mon Sep 17 00:00:00 2001
From: Linus Nordberg <linus@nordberg.se>
Date: Wed, 16 Jun 2021 13:19:25 +0200
Subject: be explicit when we return None

---
 siglog-witness.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/siglog-witness.py b/siglog-witness.py
index 0ddb8b7..5b799e0 100755
--- a/siglog-witness.py
+++ b/siglog-witness.py
@@ -223,6 +223,7 @@ class TreeHead:
                                                          proof.path())
             return ERR_CONSISTENCYPROOF_INVALID, errmsg
 
+        return None             # Success
 
 class ConsistencyProof():
     def __init__(self, consistency_proof_data):
-- 
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