Improve guard so it works for no eof new line

ftplugin/puppet.vim

@@ -1,4 +1,5 @@
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'puppet') == -1
+
 setl ts=2
 setl sts=2
 setl sw=2
@@ -6,4 +7,5 @@ setl et
 setl keywordprg=puppet\ describe\ --providers
 setl iskeyword=-,:,@,48-57,_,192-255
 setl cms=#\ %s
+
 endif