From 77c525f8cf4d8ecbab0927e8f09e2f65b78bcee2 Mon Sep 17 00:00:00 2001
From: Peter van Dijk <peter.van.dijk@powerdns.com>
Date: Tue, 2 May 2023 13:04:58 +0200
Subject: [PATCH] simplify dup check

---
 modules/lmdbbackend/lmdbbackend.cc | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/modules/lmdbbackend/lmdbbackend.cc b/modules/lmdbbackend/lmdbbackend.cc
index 6cc027a42e..ec425cc187 100644
--- a/modules/lmdbbackend/lmdbbackend.cc
+++ b/modules/lmdbbackend/lmdbbackend.cc
@@ -1672,12 +1672,9 @@ void LMDBBackend::getAllDomainsFiltered(vector<DomainInfo>* domains, const std::
       di.id = iter.getID();
       di.backend = this;
 
-      if (zonemap.count(di.zone) == 1) {
+      if (!zonemap.insert(std::make_pair(di.zone, di)).second) {
         dups.insert(di.zone);
       }
-      else {
-        zonemap[di.zone] = di;
-      }
     }
 
     for (const auto& zone : dups) {
-- 
2.47.2