I did discuss this w/ the OBS team:
https://discord.com/channels/348973006581923840/374636084883095554/1240927807828267090

> pvhaus (PST/UTC-8) — 05/17/2024 12:24 AM
> Would a question about the code in obsplugin-template be better asked here or in ⁠plugins-and-tools ?
> While I am occupying space here, my question is https://github.com/obsproject/obs-plugintemplate/pull/76/files#r1604462761
![image](https://github.com/user-attachments/assets/d7e60b33-2320-49e0-969a-a2f0bf662da5)
> PatTheMav — 05/17/2024 2:27 PM
> no need for DMs, the answer is "I have no clue"
> I just replaced the value with a CMake replacement, no idea what is "correct" there
> ...
> RytoEX — 05/17/2024 2:31 PM
> Anyway, this is (sort of) covered in the Inno docs:
> > A "{" character is treated as the start of the constant. If you want to use that
> > actual character in a place where constants are supported, you must use
> > two consecutive "{" characters. (You do not need to double "}" characters.)
>
> https://jrsoftware.org/ishelp/
> So I'd guess that the desired constant value is:
> {CD703FE5-1F2C-4837-BD3D-DD840D83C3E3}
>
> or:
> {@UUID_APP@}
>
> and doubling the { character achieves that.
> Or it's a mistake, but I'm in no condition at the moment to dig further.
> RytoEX — 05/17/2024 2:38 PM
> I guess the real question is: are you having any issues stemming from this syntax?
> If not, then it's probably working as intended.
> pvhaus (PST/UTC-8) — 05/17/2024 8:20 PM
> No, it just caught my eye as a little odd. I am trying some builds on my plug-in (obs-ndi) to see if it makes any difference (fixes or breaks anything)

So, that made me second guess my change.

Note to self: Diff this commit to the previous and eventually roll anything
worthy into a future release.