check return code of prepare_revision_walk

diff --git a/upload-pack.c b/upload-pack.c
index eaea9990e944ead3d03967bcb026539cd2dc39eb..de147853b5546f90190654844c765b0ea44902af 100644 (file)
--- a/upload-pack.c
+++ b/upload-pack.c
@@ -129,7 +129,8 @@ static int do_rev_list(int fd, void *create_full_pack)
                }
                setup_revisions(0, NULL, &revs, NULL);
        }
-       prepare_revision_walk(&revs);
+       if (prepare_revision_walk(&revs))
+               die("revision walk setup failed");
        mark_edges_uninteresting(revs.commits, &revs, show_edge);
        traverse_commit_list(&revs, show_commit, show_object);
        return 0;