trie: goimports fixes

Author: holiman

trie/proof.go

@@ -72,8 +72,8 @@ func (t *Trie) Prove(key []byte, fromLevel uint, proofDb ethdb.KeyValueWriter) e
 			fromLevel--
 			continue
 		}
-		var hn = n
-		n,hn = hasher.proofHash(n)
+		var hn node
+		n, hn = hasher.proofHash(n)
 		if hash, ok := hn.(hashNode); ok || i == 0 {
 			// If the node's database encoding is a hash (or is the
 			// root node), it becomes a proof element.

trie/trie.go

@@ -451,7 +451,7 @@ func (t *Trie) Commit(onleaf LeafCallback) (root common.Hash, err error) {
 	if err != nil {
 		return common.Hash{}, err
 	}
-	if common.BytesToHash(newRoot) != rootHash{
+	if common.BytesToHash(newRoot) != rootHash {
 		panic(fmt.Sprintf("Committed root %x != roothash %x", newRoot, rootHash))
 	}
 	t.root = newRoot