Update Sources/Cache/Storage.swift
Update Sources/Cache/Storage.swift

Co-Authored-By: Wei Wang <58d0c0df3ea9eba666b421252347024513bf8bb5@gmail.com>
onevcat/Kingfisher,Ashok28/Kingfisher,Ashok28/Kingfisher,onevcat/Kingfisher,Ashok28/Kingfisher