Fix use-after-free in node meta cleanup

bug introduced in 8908a91
minetest · May 29, 2022 · 9fc018d · 9fc018d
1 parent a9a2076
commit 9fc018d
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/script/lua_api/l_nodemeta.cpp b/src/script/lua_api/l_nodemeta.cpp
@@ -66,8 +66,10 @@ void NodeMetaRef::reportMetadataChange(const std::string *name)
 	NodeMetadata *meta = dynamic_cast<NodeMetadata*>(getmeta(false));
 
 	// If the metadata is now empty, get rid of it
-	if (meta && meta->empty())
+	if (meta && meta->empty()) {
 		clearMeta();
+		meta = nullptr;
+	}
 
 	MapEditEvent event;
 	event.type = MEET_BLOCK_NODE_METADATA_CHANGED;