patchsend-email: Honour SMTP domain when using TLS

> git-send-email sends two SMTP EHLOs when using TLS encryption, however
> only the first, unencrypted EHLO uses the SMTP domain that can be
> optionally specified by the user (--smtp-domain).  This is because the
> call to hello() that produces the second, encrypted EHLO does not pass
> the SMTP domain as an argument, and hence a default of
> 'localhost.localdomain' is used instead.
>
> Fix by passing in the SMTP domain in this call.
>
> Signed-off-by: Matthew Daley <mattjd@gmail.com>

>  git-send-email.perl |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/git-send-email.perl b/git-send-email.perl
> index 6885dfa..d491db9 100755
> --- a/git-send-email.perl
> +++ b/git-send-email.perl
> @@ -1098,7 +1098,7 @@ X-Mailer: git-send-email $gitversion
>  					$smtp_encryption = '';
>  					# Send EHLO again to receive fresh
>  					# supported commands
> -					$smtp->hello();
> +					$smtp->hello($smtp_domain);
>  				} else {
>  					die "Server does not support STARTTLS! ".$smtp->message;
>  				}

> Matthew Daley <mattjd@gmail.com> writes:
> 
>> git-send-email sends two SMTP EHLOs when using TLS encryption, however
>> only the first, unencrypted EHLO uses the SMTP domain that can be
>> optionally specified by the user (--smtp-domain).  This is because the
>> call to hello() that produces the second, encrypted EHLO does not pass
>> the SMTP domain as an argument, and hence a default of
>> 'localhost.localdomain' is used instead.
>> 
>> Fix by passing in the SMTP domain in this call.
>> 
>> Signed-off-by: Matthew Daley <mattjd@gmail.com>
> 
> Sounds sensible, thanks.
> 
> Brian, who did 69cf7bf (send-email: Cleanup smtp-domain and add config,
> 2010-04-10) to make the initial hello use $smtp_domain, could you take a
> quick look and an Ack?