[PATCH 2/3] fast-import: fix corner case for checkpoint

[Dmitry Ivankov <divanorama@gmail.com>]

checkpoint command makes fast-import finish current pack and write out
branches/tags and marks. In case no new objects are added in current
pack fast-import falls back to no-op. While it is possible that refs
or marks need to be updated (to point to old objects).

Make fast-import always dump them on checkpoint. But as before do not
cycle_packfile if there are no objects to write.

Signed-off-by: Dmitry Ivankov <divanorama@gmail.com>
---
 fast-import.c |    9 ++++-----
 1 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/fast-import.c b/fast-import.c
index 907cb05..014a807 100644
--- a/fast-import.c
+++ b/fast-import.c
@@ -3025,12 +3025,11 @@ static void parse_ls(struct branch *b)
 static void checkpoint(void)
 {
 	checkpoint_requested = 0;
-	if (object_count) {
+	if (object_count)
 		cycle_packfile();
-		dump_branches();
-		dump_tags();
-		dump_marks();
-	}
+	dump_branches();
+	dump_tags();
+	dump_marks();
 }
 
 static void parse_checkpoint(void)
-- 
1.7.3.4