.mailmap: René Scharfe has a new email address

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

.mailmap

@@ -78,7 +78,7 @@ Petr Baudis <pasky@ucw.cz> <pasky@suse.cz>
 Philippe Bruhat <book@cpan.org>
 Ralf Thielow <ralf.thielow@gmail.com> <ralf.thielow@googlemail.com>
 Ramsay Allan Jones <ramsay@ramsay1.demon.co.uk>
-René Scharfe <rene.scharfe@lsrfire.ath.cx>
+René Scharfe <l.s.r@web.de> <rene.scharfe@lsrfire.ath.cx>
 Robert Fitzsimons <robfitz@273k.net>
 Robert Zeh <robert.a.zeh@gmail.com>
 Sam Vilain <sam@vilain.net>