all: fix whitespace error of golangci-lint, remove extra empty lines (#1624)

XDCxDAO/mongodb.go

@@ -160,7 +160,6 @@ func (db *MongoDatabase) HasObject(hash common.Hash, val interface{}) (bool, err
 }
 
 func (db *MongoDatabase) GetObject(hash common.Hash, val interface{}) (interface{}, error) {
-
 	if db.IsEmptyKey(hash.Bytes()) {
 		return nil, nil
 	}

XDCxlending/lendingstate/managed_state.go

@@ -129,9 +129,7 @@ func (ms *LendingManagedState) getAccount(addr common.Hash) *exchanges {
 		if so != nil && uint64(len(account.nonces))+account.nstart < so.Nonce() {
 			ms.lenddinges[addr] = newAccount(so)
 		}
-
 	}
-
 	return ms.lenddinges[addr]
 }
 

consensus/XDPoS/engines/engine_v2/timeout.go

@@ -115,7 +115,6 @@ func (x *XDPoS_v2) onTimeoutPoolThresholdReached(blockChainReader consensus.Chai
 }
 
 func (x *XDPoS_v2) getTCEpochInfo(chain consensus.ChainReader, timeoutCert *types.TimeoutCert) (*types.EpochSwitchInfo, error) {
-
 	epochSwitchInfo, err := x.getEpochSwitchInfo(chain, (chain.CurrentHeader()), (chain.CurrentHeader()).Hash())
 	if err != nil {
 		log.Error("[getTCEpochInfo] Error when getting epoch switch info", "error", err)

consensus/XDPoS/engines/engine_v2/utils.go

@@ -126,7 +126,6 @@ func (x *XDPoS_v2) verifyMsgSignature(signedHashToBeVerified common.Hash, signat
 }
 
 func (x *XDPoS_v2) getExtraFields(header *types.Header) (*types.QuorumCert, types.Round, []common.Address, error) {
-
 	var masternodes []common.Address
 
 	// last v1 block

consensus/tests/engine_v1_tests/block_signer_test.go

@@ -94,7 +94,6 @@ func TestNotChangeSingerListIfNothingProposedOrVoted(t *testing.T) {
 
 // Should call updateM1 at gap block, and update the snapshot if there are SM transactions involved
 func TestUpdateSignerListIfVotedBeforeGap(t *testing.T) {
-
 	blockchain, backend, parentBlock, signer, signFn := PrepareXDCTestBlockChain(t, GAP-2, params.TestXDPoSMockChainConfig)
 	// Insert first Block 449
 	t.Logf("Inserting block with propose at 449...")
@@ -168,7 +167,6 @@ func TestUpdateSignerListIfVotedBeforeGap(t *testing.T) {
 
 // Should call updateM1 before gap block, and update the snapshot if there are SM transactions involved
 func TestCallUpdateM1WithSmartContractTranscation(t *testing.T) {
-
 	blockchain, backend, currentBlock, signer, signFn := PrepareXDCTestBlockChain(t, GAP-1, params.TestXDPoSMockChainConfig)
 	// Insert first Block 450 A
 	t.Logf("Inserting block with propose at 450 A...")
@@ -205,7 +203,6 @@ func TestCallUpdateM1WithSmartContractTranscation(t *testing.T) {
 
 // Should call updateM1 and update snapshot when a forked block(at gap block number) is inserted back into main chain (Edge case)
 func TestCallUpdateM1WhenForkedBlockBackToMainChain(t *testing.T) {
-
 	blockchain, backend, currentBlock, signer, signFn := PrepareXDCTestBlockChain(t, GAP-1, params.TestXDPoSMockChainConfig)
 	// Check initial signer, by default, acc3 is in the signerList
 	signers, err := GetSnapshotSigner(blockchain, blockchain.CurrentBlock().Header())
@@ -356,9 +353,7 @@ func TestCallUpdateM1WhenForkedBlockBackToMainChain(t *testing.T) {
 }
 
 func TestStatesShouldBeUpdatedWhenForkedBlockBecameMainChainAtGapBlock(t *testing.T) {
-
 	blockchain, backend, parentBlock, signer, signFn := PrepareXDCTestBlockChain(t, GAP-1, params.TestXDPoSMockChainConfig)
-
 	state, err := blockchain.State()
 	if err != nil {
 		t.Fatalf("Failed while trying to get blockchain state")

consensus/tests/engine_v1_tests/blockchain_race_condition_test.go

@@ -12,9 +12,7 @@ import (
 
 // Snapshot try to read before blockchain is written
 func TestRaceConditionOnBlockchainReadAndWrite(t *testing.T) {
-
 	blockchain, backend, parentBlock, signer, signFn := PrepareXDCTestBlockChain(t, GAP-1, params.TestXDPoSMockChainConfig)
-
 	state, err := blockchain.State()
 	if err != nil {
 		t.Fatalf("Failed while trying to get blockchain state")

consensus/tests/engine_v2_tests/helper.go

@@ -122,7 +122,6 @@ func voteTX(gasLimit uint64, nonce uint64, addr string) (*types.Transaction, err
 }
 
 func getCommonBackend(t *testing.T, chainConfig *params.ChainConfig) *backends.SimulatedBackend {
-
 	// initial helper backend
 	contractBackendForSC := backends.NewXDCSimulatedBackend(types.GenesisAlloc{
 		voterAddr: {Balance: new(big.Int).SetUint64(10000000000)},

core/vm/privacy/bulletproof.go

@@ -1292,7 +1292,6 @@ func NewECPrimeGroupKey(n int) CryptoParams {
 				//fmt.Println("Got that U value")
 			} else if confirmed == 2*n+1 {
 				cg = ECPoint{gen2.X(), gen2.Y()}
-
 			} else if confirmed == 2*n+2 {
 				ch = ECPoint{gen2.X(), gen2.Y()}
 			} else {

core/vm/privacy/bulletproof_test.go

@@ -146,7 +146,6 @@ func TestInnerProductProveLen64Rand(t *testing.T) {
 		t.Error("Inner Product Proof incorrect")
 		fmt.Printf("Values Used: \n\ta = %s\n\tb = %s\n", a, b)
 	}
-
 }
 
 func TestInnerProductVerifyFastLen1(t *testing.T) {

core/vm/privacy/ringct_test.go

@@ -50,7 +50,6 @@ func TestSign(t *testing.T) {
 	if !verified {
 		t.Error("Failed to verify Ring signature")
 	}
-
 }
 
 func TestDeserialize(t *testing.T) {

eth/api_backend.go

@@ -549,9 +549,7 @@ func (b *EthAPIBackend) GetVotersRewards(masternodeAddr common.Address) map[comm
 			break
 		}
 	}
-
 	return voterResults
-
 }
 
 // GetVotersCap return all voters's capability at a checkpoint

eth/handler.go

@@ -778,7 +778,6 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
 			} else {
 				pm.knownTxs.Add(tx.Hash(), struct{}{})
 			}
-
 		}
 		pm.txpool.AddRemotes(txs)
 

p2p/discv5/sim_test.go

@@ -252,7 +252,6 @@ func (s *simulation) printStats() {
 		fmt.Printf("*** Node %x\n", n.tab.self.ID[:8])
 		n.log.printLogs()
 	}*/
-
 }
 
 func (s *simulation) randomNode() *Network {