Improve guard so it works for no eof new line

indent/moon.vim

@@ -1,4 +1,5 @@
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'moonscript') == -1
+
 " Language:    MoonScript
 " Maintainer:  leafo <leafot@gmail.com>
 " Based On:    CoffeeScript by Mick Koch <kchmck@gmail.com>
@@ -322,4 +323,5 @@ function! GetMoonIndent(curlinenum)
 
   return indent
 endfunction
+
 endif