fix bug

Author: dongowu

src/value/node.rs

@@ -1,6 +1,4 @@
 use core::mem::size_of;
-#[cfg(feature = "sort_keys")]
-use std::collections::BTreeMap;
 use std::{
     alloc::Layout,
     collections::HashMap,
@@ -17,18 +15,17 @@ use ahash::AHashMap;
 use faststr::FastStr;
 use ref_cast::RefCast;
 use serde::ser::{Serialize, SerializeMap, SerializeSeq};
+#[cfg(feature = "sort_keys")]
+use std::collections::BTreeMap;
 
 #[cfg(target_arch = "x86_64")]
 use std::arch::x86_64::*;
 
 /// Hash index cache for large objects
 use std::sync::LazyLock;
-static HASH_INDEX_CACHE: LazyLock<Mutex<HashMap<usize, (HashMap<String, usize>, u32)>>> = 
+static HASH_INDEX_CACHE: LazyLock<Mutex<HashMap<usize, (HashMap<String, usize>, u32)>>> =
     LazyLock::new(|| Mutex::new(HashMap::new()));
 
-#[cfg(feature = "sort_keys")]
-use std::collections::BTreeMap;
-
 use super::{
     object::Pair,
     shared::Shared,