Improve guard so it works for no eof new line

ftplugin/vifm-edit.vim

@@ -1,4 +1,5 @@
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'vifm') == -1
+
 " vifm command-line editing buffer filetype plugin
 " Maintainer:  xaizek <xaizek@posteo.net>
 " Last Change: August 18, 2013
@@ -12,4 +13,5 @@ let b:did_ftplugin = 1
 call vifm#edit#Init()
 
 " vim: set tabstop=2 softtabstop=2 shiftwidth=2 noexpandtab cinoptions-=(0 :
+
 endif