Test "t/t7502-commit.sh" failed

Test "t/t7502-commit.sh" failed. I guess it's commit
v1.7.9.7-1-gf20f387 which breaks it.

    $ git log -1 --oneline --stat v1.7.9.7-1-gf20f387
    f20f commit: check committer identity more strictly
     builtin/commit.c | 2 +-
     1 file changed, 1 insertion(+), 1 deletion(-)

Result of t/t7502-commit.sh:

not ok - 21 committer is automatic
#
#
#               echo >>negative &&
#               (
#                       sane_unset GIT_COMMITTER_EMAIL &&
#                       sane_unset GIT_COMMITTER_NAME &&
#                       # must fail because there is no change
#                       test_must_fail git commit -e -m "sample"
#               ) &&
#               head -n 8 .git/COMMIT_EDITMSG | \
#               sed "s/^# Committer: .*/# Committer:/" >actual
#               test_i18ncmp expect actual
#

Contents of file expect:

    sample

    # Please enter the commit message for your changes. Lines starting
    # with '#' will be ignored, and an empty message aborts the commit.
    #
    # Author:    A U Thor [off-list ref]
    # Committer:
    #

Contents of file actual:

    sample

-- 
Jiang Xin