修复内存泄漏

src/DataStore.js

@@ -400,10 +400,6 @@ class DataPageStore {
     tempList.findIndex((item, index, arr) => {
       return hash === item.Hash;
     })
-    this.playSongList = tempList;
-    return tempList.findIndex((item, index, arr) => {
-      return hash === item.Hash;
-    })
   }
 
   removeInSongList(hash) {