Improve guard so it works for no eof new line

syntax/purescript.vim

@@ -1,4 +1,5 @@
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'purescript') == -1
+
 " syntax highlighting for purescript
 "
 " Heavily modified version of the purescript syntax
@@ -216,4 +217,5 @@ highlight def link purescriptType Type
 highlight def link purescriptComment Comment
 
 let b:current_syntax = "purescript"
+
 endif