Don't ignore headers when replying with a custom status.

If you reply a request with a custom status line and headers, those
are ignored.

fixes #14

Author: ignacio

lib/luanode/http.lua

@@ -593,7 +593,7 @@ end
 --
 --
 function ServerResponse:writeHead (statusCode, reasonPhrase, headers)
-	local headers, headerIndex
+	local headerIndex
 
 	if type(reasonPhrase) == "table" then
 		headers = reasonPhrase

test/simple/test-http-issue_14.lua

@@ -0,0 +1,31 @@
+---
+-- Test for https://github.com/ignacio/LuaNode/issues/14
+--
+-- response:writeHead with a status reason ignores headers
+--
+
+module(..., lunit.testcase, package.seeall)
+
+local common = dofile "common.lua"
+local http = require "luanode.http"
+
+function test()
+
+local server = http.createServer(function(self, req, res)
+	res:writeHead(200, "Some custom status", {["Content-Type"] = "text/plain"})
+	res:finish("hello there")
+	self:close()
+end)
+
+
+server:listen(common.PORT, function ()
+	local client = http.createClient(common.PORT)
+	local request = client:request("GET", "/")
+	request:finish()
+	request:on("response", function (self, response)
+		assert_equal(response.headers["content-type"], "text/plain")
+	end)
+end)
+
+process:loop()
+end