t4118: be nice to non-GNU sed
t4118: be nice to non-GNU sed

Elias Pipping:
> I'm on a mac, hence /usr/bin/sed is not gnu sed, which makes
> t4118 fail.

Signed-off-by: Johannes Schindelin <b4cf3b77c95aaa57254d96e276bf14cfc9472402@gmx.de>
Ack'd-by: Elias Pipping <pipping@macports.org>
Signed-off-by: Junio C Hamano <dc50d1021234060e53ec42a77d526afa2fe07479@cox.net>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git