Re: [PATCH] cmake: fix build of `t-oidtree`

> From: Johannes Schindelin <johannes.schindelin@gmx.de>
>
> When the `oidtree` test helper was turned into a unit test, a new
> `lib-oid` source file was added as dependency. This was only done in the
> Makefile so far, but also needs to be done in the CMake definition.
>
> This is a companion of ed548408723d (t/: migrate helper/test-oidtree.c
> to unit-tests/t-oidtree.c, 2024-06-08).
>
> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
> ---
>     cmake: fix build of t-oidtree
>     
>     This is based on the gt/unit-test-oidtree branch.
>     
>     /cc "Ghanshyam Thakkar" shyamthakkar001@gmail.com