Improve guard so it works for no eof new line

ftplugin/less.vim

@@ -1,4 +1,5 @@
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'less') == -1
+
 " Vim filetype plugin
 " Language:	    LessCSS
 " Author:	    Tim Pope <vimNOSPAM@tpope.org>
@@ -25,4 +26,5 @@ setlocal fo=croql
 let &l:include = '^\s*@import\s\+\%(url(\)\=["'']\='
 
 " vim:set sw=2:
+
 endif