From 18a8684873e2b3c4194f74ce7ed8319f0bc916e8 Mon Sep 17 00:00:00 2001
From: Masaaki Goshima <goccy54@gmail.com>
Date: Tue, 25 Aug 2020 11:18:01 +0900
Subject: [PATCH] Refactor

---
 decode_interface.go | 2 +-
 json_test.go        | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/decode_interface.go b/decode_interface.go
index 0d0bfc2..aa08daa 100644
--- a/decode_interface.go
+++ b/decode_interface.go
@@ -165,7 +165,7 @@ func (d *interfaceDecoder) decode(buf []byte, cursor int64, p uintptr) (int64, e
 				cursor++
 				*(*interface{})(unsafe.Pointer(p)) = *(*string)(unsafe.Pointer(&literal))
 				return cursor, nil
-			case '\000':
+			case nul:
 				return 0, errUnexpectedEndOfJSON("string", cursor)
 			}
 			cursor++
diff --git a/json_test.go b/json_test.go
index 1be6c15..3831777 100644
--- a/json_test.go
+++ b/json_test.go
@@ -199,6 +199,7 @@ func TestIndentErrors(t *testing.T) {
 }
 
 func diff(t *testing.T, a, b []byte) {
+	t.Helper()
 	for i := 0; ; i++ {
 		if i >= len(a) || i >= len(b) || a[i] != b[i] {
 			j := i - 10