Merge branch 'rs/empty-archive'

Implementations of "tar" of BSD descend have found to have trouble
with reading an otherwise empty tar archive with pax headers and
causes an unnecessary test failure.

* rs/empty-archive:
  t5004: fix issue with empty archive test and bsdtar

t/t5004-archive-corner-cases.sh

@@ -28,7 +28,7 @@ check_dir() {
 }
 
 test_expect_success 'tar archive of empty tree is empty' '
-	git archive --format=tar HEAD >empty.tar &&
+	git archive --format=tar HEAD: >empty.tar &&
 	make_dir extract &&
 	"$TAR" xf empty.tar -C extract &&
 	check_dir extract