Remove error from login page

A global variable might show up on the login page, remove it.

src/lua/init.lua

@@ -724,7 +724,9 @@ function login(req)
 	if method == "GET" then
 		--Just give them the login page
 		text = render(host..path,function()
-			return pages.login{}
+			return pages.login{
+				err = "",
+			}
 		end)
 	elseif method == "POST" then
 		--Try to log in