t0302: "unreadable" test needs POSIXPERM
t0302: "unreadable" test needs POSIXPERM

Noticed and fixed by Eric Sunshine, confirmed by Johannes Sixt.

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