From b2d543aed666aa080d516f6fc06e7d4a3100da4b Mon Sep 17 00:00:00 2001
From: Nunuhara Cabbage <nunuhara@haniwa.technology>
Date: Wed, 19 Aug 2020 17:26:34 -0700
Subject: [PATCH] Fix memory leak in S_MOD

---
 src/format.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/format.c b/src/format.c
index 41aa56e..686a8c0 100644
--- a/src/format.c
+++ b/src/format.c
@@ -129,6 +129,7 @@ static void append_fmt(struct string **s, struct fmt_spec *spec, union vm_value
 		break;
 	case FMT_STRING:
 		string_append(s, heap[arg.i].s);
+		heap_unref(arg.i);
 		break;
 	case FMT_CHAR:
 		string_push_back(s, arg.i);