From d2684228847715d7616ef39a2744e84989fb05bd Mon Sep 17 00:00:00 2001
From: David Edmondson <dme@dme.org>
Date: Wed, 8 Feb 2012 08:02:17 +0000
Subject: [PATCH] emacs: Check that the parent buffer is alive before using it.

---
 emacs/notmuch-show.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el
index 33845d39..0b023a5c 100644
--- a/emacs/notmuch-show.el
+++ b/emacs/notmuch-show.el
@@ -1704,7 +1704,7 @@ added."
   (interactive "P")
   (let ((parent-buffer notmuch-show-parent-buffer))
     (notmuch-kill-this-buffer)
-    (when parent-buffer
+    (when (buffer-live-p parent-buffer)
       (switch-to-buffer parent-buffer)
       (notmuch-search-next-thread)
       (if show-next