From 2b5e14533bb0c6ce764c92a31c24e4fea4dc468c Mon Sep 17 00:00:00 2001
From: gVisor bot <gvisor-bot@google.com>
Date: Sat, 9 Apr 2022 22:13:45 +0800
Subject: [PATCH] chore: reduce a little memory

---
 component/trie/node.go | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/component/trie/node.go b/component/trie/node.go
index 67ef64a4..05f1d840 100644
--- a/component/trie/node.go
+++ b/component/trie/node.go
@@ -7,6 +7,10 @@ type Node struct {
 }
 
 func (n *Node) getChild(s string) *Node {
+	if n.children == nil {
+		return nil
+	}
+
 	return n.children[s]
 }
 
@@ -15,12 +19,16 @@ func (n *Node) hasChild(s string) bool {
 }
 
 func (n *Node) addChild(s string, child *Node) {
+	if n.children == nil {
+		n.children = map[string]*Node{}
+	}
+
 	n.children[s] = child
 }
 
 func newNode(data any) *Node {
 	return &Node{
 		Data:     data,
-		children: map[string]*Node{},
+		children: nil,
 	}
 }