t0001: don't let a default ACL interfere with the umask test

The "init creates a new deep directory (umask vs. shared)" test expects
the permissions of newly created files to be based on the umask, which
fails if a default ACL is inherited from the working tree for git.  So
attempt to remove a default ACL if there is one.  Same idea as
8ed0a740dd.  (I guess I'm the only one who
ever runs the test suite with a default ACL set.)

Signed-off-by: Matt McCutchen <matt@mattmccutchen.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t0001-init.sh

@@ -258,6 +258,9 @@ test_expect_success POSIXPERM 'init creates a new deep directory (umask vs. shar
 	(
 		# Leading directories should honor umask while
 		# the repository itself should follow "shared"
+		mkdir newdir &&
+		# Remove a default ACL if possible.
+		(setfacl -k newdir 2>/dev/null || true) &&
 		umask 002 &&
 		git init --bare --shared=0660 newdir/a/b/c &&
 		test_path_is_dir newdir/a/b/c/refs &&