Fix test for cleanup failure in t7300 on Windows
Fix test for cleanup failure in t7300 on Windows

Keep the file open to: the OS does not allow removal of open files.
The saner systems just have a saner permission model and chmod 0
is enough for the test.

Signed-off-by: Alex Riesen <053ce55f4869b7f450d1d77b8f162c6f2bb9e137@gmail.com>
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