Client connecting to Code Name: S.T.E.A.M. causes crash

[ChainSwordCS]

On the 2024-09-03 (b1701f4) nightly build of ChirunoMod, the following issue occurs.

On either New or Old 3DS, with ChirunoMod running in the background, playing the game Code Name: S.T.E.A.M. while streaming video to a connected client results in a crash.

To outline the conditions more specifically: Just launching / playing the game with ChirunoMod open in the background (light-blue LED) doesn't crash; the crash occurs if either you are already streaming video and launch the game or if you are already playing the game and start streaming video.

The crash in question:

This issue is sort-of a regression from HzMod. HzMod v.2017.05.05 doesn't have this issue, but HzMod v.2017.08.14 and all later versions do have this issue.

Additional notes:

• Luma3DS version: 13.1.2
• Rosalina version: 2.4.3
• I can confirm the issue occurs with the 1.0.0 USA cartridge release of the game, both with and without the downloadable 1.2.0 update installed.
• I have not yet tested to see whether the issue occurs with the game installed digitally.

Note: at the time of publishing this issue, I already know the changed lines of code that cause the issue, and I know that the issue is fixed when I revert that small change. I've decided to more thoroughly document it anyway, so it may be a reference for any similar issues that crop up in the future, and so it is documented as a specific known-issue present in most versions of HzMod.

[ChainSwordCS]

I'd like to note, that crash dump looks pretty similar to #10.
Notice the PC (Program Counter) is the same, which means the loader process may be triggering the Arm11 exception around the same line of code in both cases, though the root cause may be a bit different between them.