From ef00f8ac3d762e4e0997a49c16808bb7fe81b661 Mon Sep 17 00:00:00 2001
From: Robert Zaremba <robert@zaremba.ch>
Date: Tue, 22 Jun 2021 13:19:12 +0200
Subject: [PATCH] fix(kwallet): empty wallet key query

When querying a key in an empty kwallet wallet, we receive the following error:
```
Error: unexpected end of JSON input
```
This is because the `k.wallet.ReadEntry` returns empty bytes and no error. Hence we should handle a case for empty bytes.

Reference: https://github.com/cosmos/cosmos-sdk/issues/9562
---
 kwallet.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/kwallet.go b/kwallet.go
index 1e5a16e..7dd3508 100644
--- a/kwallet.go
+++ b/kwallet.go
@@ -90,6 +90,10 @@ func (k *kwalletKeyring) Get(key string) (Item, error) {
 	if err != nil {
 		return Item{}, err
 	}
+	if len(data) == 0 {
+		return Item{}, ErrKeyNotFound
+	}
+
 
 	item := Item{}
 	err = json.Unmarshal(data, &item)