From 8babd4f9a9f1b96dec408dbf431cb180ac12eedb Mon Sep 17 00:00:00 2001
From: Jian Weihang <tonytonyjan@gmail.com>
Date: Sat, 30 Sep 2017 13:08:29 +0800
Subject: [PATCH] fix: free codepoints before returning to prevent memory leak

---
 ext/jaro_winkler/jaro_winkler.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ext/jaro_winkler/jaro_winkler.c b/ext/jaro_winkler/jaro_winkler.c
index ba84eba..4194597 100644
--- a/ext/jaro_winkler/jaro_winkler.c
+++ b/ext/jaro_winkler/jaro_winkler.c
@@ -54,8 +54,11 @@ VALUE distance(size_t argc, VALUE *argv, VALUE self,
       c_opt.adj_table =
           (TYPE(adj_table) == T_FALSE || NIL_P(adj_table)) ? 0 : 1;
   }
-  return rb_float_new(
+  VALUE ret = rb_float_new(
       (*distance_fn)(cp1.data, cp1.length, cp2.data, cp2.length, &c_opt));
+  codepoints_free(&cp1);
+  codepoints_free(&cp2);
+  return ret;
 }
 
 VALUE rb_jaro_distance(size_t argc, VALUE *argv, VALUE self) {