t0001-init: fix a file name

Without this change, grep fails because it does not find the file
instead of because it does not find the text in the file.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t0001-init.sh

@@ -251,7 +251,7 @@ test_expect_success 'init creates a new deep directory' '
 		git init --bare --shared=0660 newdir/a/b/c &&
 		test -d newdir/a/b/c/refs &&
 		ls -ld newdir/a newdir/a/b > lsab.out &&
-		! grep -v "^drwxrw[sx]r-x" ls.out &&
+		! grep -v "^drwxrw[sx]r-x" lsab.out &&
 		ls -ld newdir/a/b/c > lsc.out &&
 		! grep -v "^drwxrw[sx]---" lsc.out
 	)