fixup! bundle: refuse to create empty bundle

This reverts the patch we carried for a long time, as it did not survive
contact with the Git mailing list. In preparation for applying Jeff
King's better version, let's revert our version.

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

bundle.c

@@ -457,11 +457,10 @@ int create_bundle(struct bundle_header *header, const char *path,
 	object_array_remove_duplicates(&revs.pending);
 
 	ref_count = write_bundle_refs(bundle_fd, &revs);
-	if (ref_count <= 0)  {
-		if (!ref_count)
-			error(_("Refusing to create empty bundle."));
+	if (!ref_count)
+		die(_("Refusing to create empty bundle."));
+	else if (ref_count < 0)
 		goto err;
-	}
 
 	/* write pack */
 	if (write_pack_data(bundle_fd, &revs)) {

t/t5607-clone-bundle.sh

@@ -71,8 +71,4 @@ test_expect_success 'prerequisites with an empty commit message' '
 	git bundle verify bundle
 '
 
-test_expect_success 'try to create a bundle with empty ref count' '
-	test_expect_code 1 git bundle create foobar.bundle master..master
-'
-
 test_done