[PATCH] Brown paper bag fix to previous send-email change

[Mike Hommey <mh@glandium.org>]

My previous change led to the In-Reply-To header being <> when the given
value was empty. This fixes it.

Signed-off-by: Mike Hommey <mh@glandium.org>
---

 I think I have an antispam problem somewhere with this patch, because even
 keeping sending it, it never reached the list. And Junio didn't answer to my
 private message about it, so I guess that was some server being smart with
 the subject line. *sigh*

 PS: sorry Junio if you get this patch multiple time.

 git-send-email.perl |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/git-send-email.perl b/git-send-email.perl
index c0e1dd3..0e8c457 100755
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -369,8 +369,10 @@ if ($thread && !defined $initial_reply_to && $prompting) {
 	$initial_reply_to = $_;
 }
 
-$initial_reply_to =~ s/^\s*<?/</;
-$initial_reply_to =~ s/>?\s*$/>/;
+if ($initial_reply_to) {
+	$initial_reply_to =~ s/^\s*<?/</;
+	$initial_reply_to =~ s/>?\s*$/>/;
+}
 
 if (!defined $smtp_server) {
 	foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) {
-- 
1.5.3.7.1161.g14b8