No subject

[David Bremner]

I rebased these against branch release (and copied a comment from
aaron's email), but the test fails there, as does the reply within emacs test.

FAIL   Reply within emacs
	--- emacs.24.expected	2012-02-02 03:55:14.000000000 +0000
	+++ emacs.24.output	2012-02-02 03:55:14.000000000 +0000
	@@ -1,8 +1,4 @@
	 From: Notmuch Test Suite <test_suite at notmuchmail.org>
	-To: user at example.com
	-Subject: Re: Testing message sent via SMTP
	-In-Reply-To: <XXX>
	-Fcc: /home/bremner/software/upstream/notmuch/test/tmp.emacs/mail/sent
	+To: 
	+Subject: 
	 --text follows this line--
	-On 01 Jan 2000 12:00:00 -0000, Notmuch Test Suite <test_suite at notmuchmail.org> wrote:
	-> This is a test that messages are sent via SMTP
*ERROR*: Wrong type argument: integer-or-marker-p, nil
 FAIL   Quote MML tags in reply
	--- emacs.25.expected	2012-02-02 03:55:15.000000000 +0000
	+++ emacs.25.output	2012-02-02 03:55:15.000000000 +0000
	@@ -1,7 +1,4 @@
	 From: Notmuch Test Suite <test_suite at notmuchmail.org>
	 To: 
	-Subject: Re: Quote MML tags in reply
	-In-Reply-To: <test-emacs-mml-quoting at message.id>
	+Subject: 
	 --text follows this line--
	-On Fri, 05 Jan 2001 15:43:57 +0000, Notmuch Test Suite <test_suite at notmuchmail.org> wrote:
	-> <#!part disposition=inline>
*ERROR*: Wrong type argument: integer-or-marker-p, nil