From 15b569fb711502f82b50c6b52ef8d345d700fa5d Mon Sep 17 00:00:00 2001
From: cosin15 <143353310+cosin15@users.noreply.github.com>
Date: Tue, 23 Apr 2024 19:03:50 +0200
Subject: [PATCH] Remove unnecessary copy of a big data structure

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

diff --git a/src/map.h b/src/map.h
index 33b4627c4..a4bf45314 100644
--- a/src/map.h
+++ b/src/map.h
@@ -73,7 +73,7 @@ struct MapEditEvent
 		modified_blocks.push_back(getNodeBlockPos(pos));
 	}
 
-	void setModifiedBlocks(const std::map<v3s16, MapBlock *> blocks)
+	void setModifiedBlocks(const std::map<v3s16, MapBlock *>& blocks)
 	{
 		assert(modified_blocks.empty()); // only meant for initialization (once)
 		modified_blocks.reserve(blocks.size());