Re: [PATCH 7/9] reftable/merged: refactor seeking of records

> The code to seek reftable records in the merged table code is quite hard
> to read and does not conform to our coding style in multiple ways:
>
>   - We have multiple exit paths where we release resources even though
>     that is not really necessary

>   - We use a scoped error variable `e` which is hard to reason about.
>     This variable is not required at all.
>
>   - We allocate memory in the variable declarations, which is easy to
>     miss.
>
> Refactor the function so that it becomes more maintainable in the
> future.
>
> Signed-off-by: Patrick Steinhardt <ps@pks.im>