From 7cc6614bd475eef7ea8918837e81a0fe92aac73e Mon Sep 17 00:00:00 2001
From: Potato42 <bburrill98@gmail.com>
Date: Wed, 25 Jan 2017 13:52:51 -0800
Subject: [PATCH] Only unlet b:supertab_close_preview if it exists

This change fixes a problem where Vim 7.3 would exit with a non-zero
code when `g:SuperTabClosePreviewOnPopupClose` is 1.  I see no reason
why `b:supertab_close_preview` should be unlet silently if it has
already been determined that it doesn't exist.  In addition, I removed
the `silent!` part since it is no longer needed.
---
 plugin/supertab.vim | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugin/supertab.vim b/plugin/supertab.vim
index ba8f4dd..797088d 100644
--- a/plugin/supertab.vim
+++ b/plugin/supertab.vim
@@ -752,8 +752,8 @@ function! s:ClosePreview() " {{{
         " ignore: no autocmds defined
       endtry
     endif
+    unlet b:supertab_close_preview
   endif
-  silent! unlet b:supertab_close_preview
 endfunction " }}}
 
 function! s:ReleaseKeyPresses() " {{{