diff-highlight: correct test graph diagram

We actually branch "A" off of "D". The sample "--graph"
output is right, but the left-to-right diagram is
misleading. Let's fix it.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2018-03-21 01:47:45 -04:00 committed by Junio C Hamano
parent fc849d8d6b
commit 5013acc278