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-rw-r--r--src/treegen.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/treegen.cpp b/src/treegen.cpp
index 505954e8e..8bf9619a0 100644
--- a/src/treegen.cpp
+++ b/src/treegen.cpp
@@ -113,7 +113,7 @@ void make_tree(MMVManip &vmanip, v3s16 p0,
// L-System tree LUA spawner
treegen::error spawn_ltree(ServerEnvironment *env, v3s16 p0,
- INodeDefManager *ndef, TreeDef tree_definition)
+ INodeDefManager *ndef, const TreeDef &tree_definition)
{
ServerMap *map = &env->getServerMap();
std::map<v3s16, MapBlock*> modified_blocks;