Re: [PATCH 3/8] http: refactor subsystem to use `packfile_list`s

> The dumb HTTP protocol directly fetches packfiles from the remote server
> and temporarily stores them in a list of packfiles. Those packfiles are
> not yet added to the repository's packfile store until we finalize the
> whole fetch.
>
> Refactor the code to instead use a `struct packfile_list` to store those
> packs. This prepares us for a subsequent change where the `->next`
> pointer of `struct packed_git` will go away.
>
> Note that this refactoring creates some temporary duplication of code,
> as we now have both `packfile_list_find_oid()` and `find_oid_pack()`.
> The latter function will be removed in a subsequent commit though.
>
> Signed-off-by: Patrick Steinhardt <ps@pks.im>
> ---
>  http-push.c   |  6 +++---
>  http-walker.c | 26 +++++++++-----------------
>  http.c        | 21 ++++++++-------------
>  http.h        |  5 +++--
>  packfile.c    |  9 +++++++++
>  packfile.h    |  8 ++++++++
>  6 files changed, 40 insertions(+), 35 deletions(-)
>
> [snip]
>
> diff --git a/packfile.c b/packfile.c
> index 4d2d3b674f3..6aa2ca8ac9e 100644
> --- a/packfile.c
> +++ b/packfile.c
> @@ -121,6 +121,15 @@ void packfile_list_append(struct packfile_list *list, struct packed_git *pack)
>  	}
>  }
>  
> +struct packed_git *packfile_list_find_oid(struct packfile_list_entry *packs,
> +					  const struct object_id *oid)
> +{