From 1ba993d07c8e823c6051de207b9d1fe07aa16656 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Tue, 14 Sep 2021 08:15:33 +0200
Subject: [PATCH] Fix clang warning

---
 src/libutil/serialise.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/libutil/serialise.cc b/src/libutil/serialise.cc
index 374b48d79..16f3476c2 100644
--- a/src/libutil/serialise.cc
+++ b/src/libutil/serialise.cc
@@ -244,7 +244,8 @@ std::unique_ptr<FinishSink> sourceToSink(std::function<void(Source &)> fun)
             if (!cur.empty()) (*coro)(false);
         }
 
-        void finish() {
+        void finish() override
+        {
             if (!coro) return;
             if (!*coro) abort();
             (*coro)(true);