From dc9702df4c598b186279fa8ec27dbd095a144c42 Mon Sep 17 00:00:00 2001
From: Danila Fedorin <danila.fedorin@gmail.com>
Date: Tue, 12 Jun 2018 02:09:51 -0700
Subject: [PATCH] Fix memory allocation / free bugs.

---
 src/parser.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/parser.c b/src/parser.c
index 08b0227..cd46a14 100644
--- a/src/parser.c
+++ b/src/parser.c
@@ -41,8 +41,7 @@ void _parser_extract_token_buffer(struct parser_state* state, char* buffer,
 }
 
 int _parser_foreach_free_tree(void* data, va_list args) {
-    libab_tree_free(data);
-    free(data);
+    libab_tree_free_recursive(data);
     return 0;
 }
 
@@ -1118,8 +1117,9 @@ libab_result _parse_expression(struct parser_state* state,
         result = LIBAB_UNEXPECTED;
     }
 
-    ll_free(&op_stack);
+    ll_foreach(&op_stack, NULL, compare_always, _parser_foreach_free_tree);
     ll_foreach(&out_stack, NULL, compare_always, _parser_foreach_free_tree);
+    ll_free(&op_stack);
     ll_free(&out_stack);
 
     return result;