Fix misuse of sys.fpath()

Author: szym

server.lua

@@ -5,6 +5,7 @@
 -- Serves files from /static otherwise.
 
 local async = require('async')
+local paths = require('paths')
 local sys = require('sys')
 
 local function getMime(ext)
@@ -57,7 +58,7 @@ local function handler(req, res, client)
     local ext = string.match(path, "%.%l%l%l?")
     local mime = getMime(ext)
 
-    local file = io.open(sys.fpath() .. '/static' .. path, 'r')
+    local file = io.open(paths.dirname(sys.fpath()) .. '/static' .. path, 'r')
     if file ~= nil then
       local content = file:read("*all")
       file:close()