filter-branch: Simplify parent computation.
filter-branch: Simplify parent computation.

We can use git rev-list --parents when we list the commits to rewrite.
It is not necessary to run git rev-list --parents for each commit in the
loop.

Signed-off-by: Johannes Sixt <5cc107486946fdcf16e86d7c808fa50f4312125f@telecom.at>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

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