This was proposed by Eric Wong and fixes the test. (Of course, git-send-email
does not work, if there is no Net::SMTP here, but it will say what is wrong
when you actually try to use send-email.)
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Junio C Hamano <junkio@cox.net>