adjust getDirectoryItems and getInfo behavior with nonexistent files

nativefs.lua

@@ -426,18 +426,20 @@ local function withTempMount(dir, fn)
 end
 
 function nativefs.getDirectoryItems(dir, callback)
-	return withTempMount(dir, function(mount)
+	local result, err = withTempMount(dir, function(mount)
 		return love.filesystem.getDirectoryItems(mount, callback)
 	end)
+	return result or {}
 end
 
 function nativefs.getInfo(path, filtertype)
 	local dir = path:match("(.*[\\/]).*$") or './'
 	local file = love.path.leaf(path)
-	return withTempMount(dir, function(mount)
+	local result, err = withTempMount(dir, function(mount)
 		local filepath = string.format('%s/%s', mount, file)
 		return love.filesystem.getInfo(filepath, filtertype)
 	end)
+	return result or nil
 end
 
 return nativefs

test/main.lua

@@ -134,6 +134,8 @@ function test_fs_getDirectoryItems()
 	for i = 1, #items2 do
 		equals(map[items2[i]], map2[items2[i]])
 	end
+
+	equals(#fs.getDirectoryItems('does_not_exist'), 0)
 end
 
 function test_fs_setWorkingDirectory()
@@ -172,6 +174,8 @@ function test_fs_getInfo()
 	notEquals(info, nil)
 	equals(info.type, 'file')
 
+	equals(fs.getInfo('does_not_exist', nil))
+
 	local info = fs.getInfo(testFile1)
 	notEquals(info, nil)
 	equals(info.type, 'file')