[PATCH 15/16] send-email: make_message_id use "require" instead of "use"

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

Change the use of Sys::Hostname from a "use" to a "require". The
former happens in an implicit BEGIN block and is thus immune from the
if block it's contained in, so it's always loaded.

This should speed up the invocation of git-send-email by a few
milliseconds.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@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 9cb6aa6..5a19d3d 100755
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -819,7 +819,7 @@ sub make_message_id {
 		last if (defined $du_part and $du_part ne '');
 	}
 	if (not defined $du_part or $du_part eq '') {
-		use Sys::Hostname qw();
+		require Sys::Hostname;
 		$du_part = 'user@' . Sys::Hostname::hostname();
 	}
 	my $message_id_template = "<%s-git-send-email-%s>";
-- 
1.7.3.159.g610493