From f1ee54bc37bf48ab3dfe399ee5e13bc8ccc51c3f Mon Sep 17 00:00:00 2001
From: Steven Johnson <srj@google.com>
Date: Thu, 7 Dec 2023 11:38:46 -0800
Subject: [PATCH] Update Util.h

---
 src/Util.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Util.h b/src/Util.h
index 98808955cbcc..15c297796911 100644
--- a/src/Util.h
+++ b/src/Util.h
@@ -191,7 +191,7 @@ template<typename T>
 std::string join_strings(const std::vector<T> &sources, const std::string &delim) {
     size_t sz = 0;
     if (!sources.empty()) {
-        delim.size() * (sources.size() - 1);
+        sz += delim.size() * (sources.size() - 1);
     }
     for (const auto &s : sources) {
         sz += s.size();