Improve guard so it works for no eof new line

autoload/vital/_crystal/Data/String.vim

@@ -1,4 +1,5 @@
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'crystal') == -1
+
 " ___vital___
 " NOTE: lines between '" ___vital___' is generated by :Vitalize.
 " Do not mofidify the code nor insert new lines before '" ___vital___'
@@ -626,4 +627,5 @@ endfunction
 let &cpo = s:save_cpo
 unlet s:save_cpo
 " vim:set et ts=2 sts=2 sw=2 tw=0:
+
 endif