From 57fd9cc5867dabcedb951209e955043f51d3272d Mon Sep 17 00:00:00 2001
From: Jyrki Vesterinen <sandgtx@gmail.com>
Date: Thu, 24 May 2018 20:21:03 +0300
Subject: [PATCH] Fix memory leak in terrain filter matching

---
 src/terrain/filter.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/terrain/filter.cpp b/src/terrain/filter.cpp
index d35f6e308e65..fe2d85b39d9c 100644
--- a/src/terrain/filter.cpp
+++ b/src/terrain/filter.cpp
@@ -335,7 +335,8 @@ bool terrain_filter::match_internal(const map_location& loc, const unit* ref_uni
 				callable.add("teleport_unit", wfl::variant(ref));
 				// It's not destroyed upon scope exit because the variant holds a reference
 			}
-			const wfl::formula form(cfg_["formula"], new wfl::gamestate_function_symbol_table);
+			wfl::gamestate_function_symbol_table symbols;
+			const wfl::formula form(cfg_["formula"], &symbols);
 			if(!form.evaluate(callable).as_bool()) {
 				return false;
 			}