Minor indentation fix.

Signed-off-by: Pascal Obry <pascal@obry.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git-send-email.perl

@@ -212,7 +212,7 @@ my %config_settings = (
     "smtpserverport" => \$smtp_server_port,
     "smtpuser" => \$smtp_authuser,
     "smtppass" => \$smtp_authpass,
-	"smtpdomain" => \$smtp_domain,
+    "smtpdomain" => \$smtp_domain,
     "to" => \@to,
     "cc" => \@initial_cc,
     "cccmd" => \$cc_cmd,