update

Author: liuxiaobleach

eth/signer_awskms.go

@@ -41,13 +41,12 @@ func NewKmsSigner(region, keyAlias, awsKey, awsSec string, chainId *big.Int) (*K
 	cfg := &aws.Config{
 		Region: aws.String(region),
 	}
-
 	if awsKey == "profile" {
 		cfg.Credentials = credentials.NewSharedCredentials("", awsSec)
 	} else if awsKey != "" && awsSec != "" {
 		cfg.Credentials = credentials.NewStaticCredentials(awsKey, awsSec, "")
 	} else {
-		// default use role
+		// default use aws role
 	}
 	sess, err := session.NewSession(cfg)
 	if err != nil {
@@ -205,7 +204,6 @@ func CreateSigner(ksfile, passphrase string, chainid *big.Int) (Signer, common.A
 				return nil, common.Address{}, fmt.Errorf("%s has wrong format, expected '<awsKey>:<awsSecret>'", passphrase)
 			}
 		}
-
 		kmsSigner, err := NewKmsSigner(kmskeyinfo[1], kmskeyinfo[2], awskeysec[0], awskeysec[1], chainid)
 		if err != nil {
 			return nil, common.Address{}, err