Improve guard so it works for no eof new line

syntax/json5.vim

@@ -1,4 +1,5 @@
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'json5') == -1
+
 " Modified from the original taken from https://github.com/gutenye/json5.vim
 
 " Syntax setup
@@ -66,4 +67,5 @@ if !exists('b:current_syntax')
   let b:current_syntax = 'json5'
 endif
 
+
 endif