From c7260ff3051b97a3e1064979280fac480a157b7e Mon Sep 17 00:00:00 2001
From: htkao <htkao@pm.me>
Date: Mon, 18 Feb 2019 22:55:09 -0800
Subject: [PATCH] signer/core: handle JSON unmarshal error

---
 signer/core/abihelper.go | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/signer/core/abihelper.go b/signer/core/abihelper.go
index de6b815a68..88c1da0330 100644
--- a/signer/core/abihelper.go
+++ b/signer/core/abihelper.go
@@ -177,7 +177,9 @@ func NewAbiDBFromFile(path string) (*AbiDb, error) {
 	if err != nil {
 		return nil, err
 	}
-	json.Unmarshal(raw, &db.db)
+	if err := json.Unmarshal(raw, &db.db); err != nil {
+		return nil, err
+	}
 	return db, nil
 }
 
@@ -192,14 +194,18 @@ func NewAbiDBFromFiles(standard, custom string) (*AbiDb, error) {
 	if err != nil {
 		return nil, err
 	}
-	json.Unmarshal(raw, &db.db)
+	if err := json.Unmarshal(raw, &db.db); err != nil {
+		return nil, err
+	}
 	// Custom file may not exist. Will be created during save, if needed
 	if _, err := os.Stat(custom); err == nil {
 		raw, err = ioutil.ReadFile(custom)
 		if err != nil {
 			return nil, err
 		}
-		json.Unmarshal(raw, &db.customdb)
+		if err := json.Unmarshal(raw, &db.customdb); err != nil {
+			return nil, err
+		}
 	}
 
 	return db, nil