Improve guard so it works for no eof new line

syntax/haxe.vim

@@ -1,4 +1,5 @@
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'haxe') == -1
+
 " Vim syntax file
 " Language:     haxe
 " Derived from:
@@ -426,4 +427,5 @@ if main_syntax == 'haxe'
   unlet main_syntax
 endif
 let b:spell_options="contained"
+
 endif