Re: [PATCH v5 08/12] bundle: properly clear all revision flags

> From: Derrick Stolee <derrickstolee@github.com>
>
> The verify_bundle() method checks two things for a bundle's
> prerequisites:
>
>  1. Are these objects in the object store?
>  2. Are these objects reachable from our references?
>
> In this second question, multiple uses of verify_bundle() in the same
> process can report an invalid bundle even though it is correct. The
> reason is due to not clearing all of the commit marks on the commits
> previously walked.
> ...
> Moving this loop to the cleanup step alone would cause a segfault when
> running 'git bundle verify' outside of a repository, but this is because
> of that error condition using "goto cleanup" when returning is perfectly
> safe. Nothing has been initialized at that point, so we can return
> immediately without causing any leaks.