Update dependencies

- uses newer version of go-ethereum required for go1.11

vendor/github.com/ethereum/go-ethereum/eth/fetcher/fetcher.go

@@ -88,7 +88,7 @@ type headerFilterTask struct {
 	time    time.Time       // Arrival time of the headers
 }
 
-// headerFilterTask represents a batch of block bodies (transactions and uncles)
+// bodyFilterTask represents a batch of block bodies (transactions and uncles)
 // needing fetcher filtering.
 type bodyFilterTask struct {
 	peer         string                 // The source peer of block bodies
@@ -127,7 +127,7 @@ type Fetcher struct {
 	// Block cache
 	queue  *prque.Prque            // Queue containing the import operations (block number sorted)
 	queues map[string]int          // Per peer block counts to prevent memory exhaustion
-	queued map[common.Hash]*inject // Set of already queued blocks (to dedup imports)
+	queued map[common.Hash]*inject // Set of already queued blocks (to dedupe imports)
 
 	// Callbacks
 	getBlock       blockRetrievalFn   // Retrieves a block from the local chain
@@ -204,7 +204,7 @@ func (f *Fetcher) Notify(peer string, hash common.Hash, number uint64, time time
 	}
 }
 
-// Enqueue tries to fill gaps the the fetcher's future import queue.
+// Enqueue tries to fill gaps the fetcher's future import queue.
 func (f *Fetcher) Enqueue(peer string, block *types.Block) error {
 	op := &inject{
 		origin: peer,
@@ -292,20 +292,20 @@ func (f *Fetcher) loop() {
 		height := f.chainHeight()
 		for !f.queue.Empty() {
 			op := f.queue.PopItem().(*inject)
+			hash := op.block.Hash()
 			if f.queueChangeHook != nil {
-				f.queueChangeHook(op.block.Hash(), false)
+				f.queueChangeHook(hash, false)
 			}
 			// If too high up the chain or phase, continue later
 			number := op.block.NumberU64()
 			if number > height+1 {
-				f.queue.Push(op, -float32(op.block.NumberU64()))
+				f.queue.Push(op, -float32(number))
 				if f.queueChangeHook != nil {
-					f.queueChangeHook(op.block.Hash(), true)
+					f.queueChangeHook(hash, true)
 				}
 				break
 			}
 			// Otherwise if fresh and still unknown, try and import
-			hash := op.block.Hash()
 			if number+maxUncleDist < height || f.getBlock(hash) != nil {
 				f.forgetBlock(hash)
 				continue
@@ -633,7 +633,7 @@ func (f *Fetcher) enqueue(peer string, block *types.Block) {
 }
 
 // insert spawns a new goroutine to run a block insertion into the chain. If the
-// block's number is at the same height as the current import phase, if updates
+// block's number is at the same height as the current import phase, it updates
 // the phase states accordingly.
 func (f *Fetcher) insert(peer string, block *types.Block) {
 	hash := block.Hash()

vendor/github.com/ethereum/go-ethereum/eth/fetcher/fetcher_test.go

@@ -34,7 +34,7 @@ import (
 )
 
 var (
-	testdb, _    = ethdb.NewMemDatabase()
+	testdb       = ethdb.NewMemDatabase()
 	testKey, _   = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
 	testAddress  = crypto.PubkeyToAddress(testKey.PublicKey)
 	genesis      = core.GenesisBlockForTesting(testdb, testAddress, big.NewInt(1000000000))
@@ -198,7 +198,7 @@ func (f *fetcherTester) makeBodyFetcher(peer string, blocks map[common.Hash]*typ
 	}
 }
 
-// verifyFetchingEvent verifies that one single event arrive on an fetching channel.
+// verifyFetchingEvent verifies that one single event arrive on a fetching channel.
 func verifyFetchingEvent(t *testing.T, fetching chan []common.Hash, arrive bool) {
 	if arrive {
 		select {