Improve guard so it works for no eof new line

syntax/stylus.vim

@@ -1,4 +1,5 @@
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'stylus') == -1
+
 " Vim syntax file
 " Language:	CSS3
 " Maintainer:	Hsiaoming Yang <lepture@me.com>
@@ -375,4 +376,5 @@ hi def link stylusIdChar                Special
 let b:current_syntax = "stylus"
 
 " vim:set sw=2:
+
 endif