fix mock blockchain; golint; bump patch

core/blockchain.go

@@ -43,7 +43,7 @@ import (
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/rlp"
 	"github.com/ethereum/go-ethereum/trie"
-	"github.com/hashicorp/golang-lru"
+	lru "github.com/hashicorp/golang-lru"
 )
 
 var (
@@ -2288,7 +2288,6 @@ func (bc *BlockChain) LockTrie(root common.Hash) {
 	bc.trieLock.Lock()
 	bc.lockedRoots[root] = true
 	bc.trieLock.Unlock()
-	return
 }
 
 // UnlockTrie allows dereferencing of the provided root- provided it was previously locked
@@ -2296,5 +2295,4 @@ func (bc *BlockChain) UnlockTrie(root common.Hash) {
 	bc.trieLock.Lock()
 	bc.lockedRoots[root] = false
 	bc.trieLock.Unlock()
-	return
 }

params/version.go

@@ -24,7 +24,7 @@ const (
 	VersionMajor = 1                 // Major version component of the current release
 	VersionMinor = 9                 // Minor version component of the current release
 	VersionPatch = 11                // Patch version component of the current release
-	VersionMeta  = "statediff-0.0.3" // Version metadata to append to the version string
+	VersionMeta  = "statediff-0.0.4" // Version metadata to append to the version string
 )
 
 // Version holds the textual version string.

statediff/testhelpers/mocks/blockchain.go

@@ -124,3 +124,5 @@ func (blockChain *BlockChain) SetTdByHash(hash common.Hash, td *big.Int) {
 	}
 	blockChain.TDByHash[hash] = td
 }
+
+func (blockChain *BlockChain) UnlockTrie(root common.Hash) {}