From b427ad80f6b2525b765eeeb514e61ff009336f56 Mon Sep 17 00:00:00 2001
From: Seth Hillbrand <seth@kipro-pcb.com>
Date: Fri, 3 Feb 2023 15:28:53 +0100
Subject: [PATCH] Don't make unneeded copies of std::pairs

---
 pcbnew/zone_filler.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pcbnew/zone_filler.cpp b/pcbnew/zone_filler.cpp
index 28060f9b32..6afcc0f83f 100644
--- a/pcbnew/zone_filler.cpp
+++ b/pcbnew/zone_filler.cpp
@@ -636,7 +636,7 @@ bool ZONE_FILLER::Fill( std::vector<ZONE*>& aZones, bool aCheck, wxWindow* aPare
 
         if( ret.valid() )
         {
-            for( auto action_item : ret.get() )
+            for( auto& action_item : ret.get() )
                 action_item.first->DeletePolygonAndTriangulationData( action_item.second, true );
         }
     }