Improve guard so it works for no eof new line

syntax/crystal.vim

@@ -1,4 +1,5 @@
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'crystal') == -1
+
 " Language: Crystal
 " Based on Ruby syntax highlight
 " which was made by Mirko Nasato and Doug Kearns
@@ -398,4 +399,5 @@ hi def link crystalSpaceError		crystalError
 let b:current_syntax = 'crystal'
 
 " vim: nowrap sw=2 sts=2 ts=8 noet:
+
 endif