fix: assign variables to prevent slicing into nil (#28)

Signed-off-by: Chris Gianelloni <wolf31o2@blinklabs.io>

branch.go

@@ -281,7 +281,7 @@ func (b *Branch) generateProof(path []Nibble) (*Proof, error) {
 }
 
 func (b *Branch) getChildren() []Node {
-	var ret []Node
+	ret := []Node{}
 	for _, tmpChild := range b.children {
 		if tmpChild != nil {
 			ret = append(ret, tmpChild)

trie_test.go

@@ -233,7 +233,7 @@ func TestTrieFruitsGet(t *testing.T) {
 
 func TestTrieFruitsSetDeleteConsistentHash(t *testing.T) {
 	trie := NewTrie()
-	var hashes []Hash
+	hashes := []Hash{}
 	for _, entry := range fruitsTestEntries {
 		hashes = append(hashes, trie.Hash())
 		trie.Set([]byte(entry.key), []byte(entry.value))