From ea9fa95a5410fe546ba6095ee9873d9f22ee7f7c Mon Sep 17 00:00:00 2001
From: Frans de Jonge <fransdejonge@gmail.com>
Date: Sat, 29 Apr 2017 08:57:50 +0200
Subject: [PATCH] util.lua: fix lfs require in isEmptyDir()

Pointed out by @poire-z https://github.com/koreader/koreader/commit/ed7937f65d0891f54491be8f77f9864edaaad460#commitcomment-21956632
---
 frontend/util.lua | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/frontend/util.lua b/frontend/util.lua
index 9f1968c5f..276d70a96 100644
--- a/frontend/util.lua
+++ b/frontend/util.lua
@@ -287,7 +287,8 @@ end
 ---- @string path
 ---- @treturn bool
 function util.isEmptyDir(path)
-    for filename in require("lfs").dir(path) do
+    local lfs = require("libs/libkoreader-lfs")
+    for filename in lfs.dir(path) do
         if filename ~= '.' and filename ~= '..' then
             return false
         end