Dev (#148)

[bytom/bytom.git] / protocol / patricia / patricia.go

diff --git a/protocol/patricia/patricia.go b/protocol/patricia/patricia.go
index 2e4c434..1e0cba6 100644 (file)
--- a/protocol/patricia/patricia.go
+++ b/protocol/patricia/patricia.go
@@ -56,12 +56,11 @@ func walk(n *node, walkFn WalkFunc) error {
                return walkFn(n.Key())
        }
 
-       err := walk(n.children[0], walkFn)
-       if err != nil {
+       if err := walk(n.children[0], walkFn); err != nil {
                return err
        }
 
-       err = walk(n.children[1], walkFn)
+       err := walk(n.children[1], walkFn)
        return err
 }
 
@@ -104,7 +103,7 @@ func lookup(n *node, key []uint8) *node {
 // in t or to contain an element in t as a prefix.
 // If item itself is already in t, Insert does nothing
 // (and this is not an error).
-func (t *Tree) Insert(item []byte) error {
+func (t *Tree) Insert(item []byte) (err error) {
        key := bitKey(item)
 
        var hash bc.Hash
@@ -119,7 +118,6 @@ func (t *Tree) Insert(item []byte) error {
                return nil
        }
 
-       var err error
        t.root, err = insert(t.root, key, &hash)
        return err
 }