check return code of prepare_revision_walk

A failure in prepare_revision_walk can be caused by
a not parseable object.

Signed-off-by: Martin Koegler <mkoegler@auto.tuwien.ac.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/bundle.c b/bundle.c
index 5c95eca07d..bd12ec8537 100644
--- a/bundle.c
+++ b/bundle.c
@@ -128,7 +128,8 @@ int verify_bundle(struct bundle_header *header, int verbose)
 		add_object_array(e->item, e->name, &refs);
 	}
 
-	prepare_revision_walk(&revs);
+	if (prepare_revision_walk(&revs))
+		die("revision walk setup failed");
 
 	i = req_nr;
 	while (i && (commit = get_revision(&revs)))