[PATCH 4/4] builtin-fast-export.c: handle nested tags

[Erik Faye-Lund <kusmabite@gmail.com>]

When tags that points to tags are passed to fast-export, an error saying
"Tag [TAGNAME] points nowhere?". This fix calls parse_object() on the object
before referencing it's tag, to ensure the tag-info is fully initialized. In
addition, it inserts a comment to point out where nested tags are handled. This
is consistent with the comment for signed tags.

Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com>
---
 builtin-fast-export.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/builtin-fast-export.c b/builtin-fast-export.c
index c3ce320..8083c5f 100644
--- a/builtin-fast-export.c
+++ b/builtin-fast-export.c
@@ -362,7 +362,10 @@ static void get_tags_and_duplicates(struct object_array *pending,
 			break;
 		case OBJ_TAG:
 			tag = (struct tag *)e->item;
+
+			/* handle nested tags */
 			while (tag && tag->object.type == OBJ_TAG) {
+				parse_object(tag->object.sha1);
 				string_list_append(full_name, extra_refs)->util = tag;
 				tag = (struct tag *)tag->tagged;
 			}
-- 
1.6.2.1.226.gcb2dd