Improve guard so it works for no eof new line

ftplugin/ls.vim

@@ -1,4 +1,5 @@
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'livescript') == -1
+
 " Language:    LiveScript
 " Maintainer:  George Zahariev
 " URL:         http://github.com/gkz/vim-ls
@@ -203,4 +204,5 @@ command! -range=% -bar -nargs=* -complete=customlist,s:LiveScriptCompileComplete
 \        LiveScriptCompile call s:LiveScriptCompile(<line1>, <line2>, <q-args>)
 " Run some LiveScript.
 command! -range=% -bar LiveScriptRun <line1>,<line2>:w !lsc -sp
+
 endif