fix: go vet and checkstatic issue

Signed-off-by: chenchanglew <lewchenchang@gmail.com>

samples/chaincode/secret-keeper-go/chaincode/secret-keeper.go

@@ -72,12 +72,12 @@ func (t *SecretKeeper) AddUser(ctx contractapi.TransactionContextInterface, sig
 	if err != nil {
 		return err
 	}
-	if valid != true {
-		return fmt.Errorf("User are not allowed to perform this action.")
+	if !valid {
+		return fmt.Errorf("user are not allowed to perform this action")
 	}
 
 	// update the value
-	authSet, err := GetAuthList(ctx)
+	authSet, _ := GetAuthList(ctx)
 	authSet.Pubkey[pubkey] = struct{}{}
 
 	authSetJson, err := json.Marshal(authSet)
@@ -99,12 +99,12 @@ func (t *SecretKeeper) RemoveUser(ctx contractapi.TransactionContextInterface, s
 	if err != nil {
 		return err
 	}
-	if valid != true {
-		return fmt.Errorf("User are not allowed to perform this action.")
+	if !valid {
+		return fmt.Errorf("user are not allowed to perform this action")
 	}
 
 	// update the value
-	authSet, err := GetAuthList(ctx)
+	authSet, _ := GetAuthList(ctx)
 	delete(authSet.Pubkey, pubkey)
 
 	authSetJson, err := json.Marshal(authSet)
@@ -126,8 +126,8 @@ func (t *SecretKeeper) LockSecret(ctx contractapi.TransactionContextInterface, s
 	if err != nil {
 		return err
 	}
-	if valid != true {
-		return fmt.Errorf("User are not allowed to perform this action.")
+	if !valid {
+		return fmt.Errorf("user are not allowed to perform this action")
 	}
 
 	// update the value
@@ -154,8 +154,8 @@ func (t *SecretKeeper) RevealSecret(ctx contractapi.TransactionContextInterface,
 	if err != nil {
 		return nil, err
 	}
-	if valid != true {
-		return nil, fmt.Errorf("User are not allowed to perform this action.")
+	if !valid {
+		return nil, fmt.Errorf("user are not allowed to perform this action")
 	}
 
 	// reveal secret

samples/chaincode/secret-keeper-go/chaincode/secret-keeper_test.go

@@ -172,7 +172,7 @@ func TestNormalBehavior(t *testing.T) {
 	require.NoError(t, err)
 
 	_, authSetByte := chaincodeStub.PutStateArgsForCall(0)
-	_, secretByte := chaincodeStub.PutStateArgsForCall(1)
+	_, _ = chaincodeStub.PutStateArgsForCall(1)
 
 	aliceSig := "Alice"
 	bobSig := "Bob"
@@ -189,7 +189,7 @@ func TestNormalBehavior(t *testing.T) {
 	chaincodeStub.GetStateReturnsOnCall(2, authSetByte, nil)
 	err = secretKeeper.LockSecret(transactionContext, eveSig, newSecret)
 	require.NoError(t, err)
-	_, secretByte = chaincodeStub.PutStateArgsForCall(3)
+	_, secretByte := chaincodeStub.PutStateArgsForCall(3)
 
 	chaincodeStub.GetStateReturnsOnCall(3, authSetByte, nil)
 	chaincodeStub.GetStateReturnsOnCall(4, secretByte, nil)
@@ -225,7 +225,7 @@ func TestRollbackAttack(t *testing.T) {
 	require.NoError(t, err)
 
 	_, authSetByte := chaincodeStub.PutStateArgsForCall(0)
-	_, secretByte := chaincodeStub.PutStateArgsForCall(1)
+	_, _ = chaincodeStub.PutStateArgsForCall(1)
 	oldauthSetByte := authSetByte
 
 	aliceSig := "Alice"
@@ -243,7 +243,7 @@ func TestRollbackAttack(t *testing.T) {
 	chaincodeStub.GetStateReturnsOnCall(2, authSetByte, nil)
 	err = secretKeeper.LockSecret(transactionContext, eveSig, newSecret)
 	require.NoError(t, err)
-	_, secretByte = chaincodeStub.PutStateArgsForCall(3)
+	_, secretByte := chaincodeStub.PutStateArgsForCall(3)
 
 	chaincodeStub.GetStateReturnsOnCall(3, authSetByte, nil)
 	chaincodeStub.GetStateReturnsOnCall(4, secretByte, nil)