Crash during Ep4 gap effect using Experimental EXE

Posisbly related to https://github.com/07th-mod/umineko-answer/issues/93 "Crash in ep5 with gap effect"

We had two reports of a crash at this point in the game, just after the line:

`langen^...Even Kyrie had no way of eluding Gaap's capture.^\`

The first report was 2021-20-08

> My friend who uses the experimental exe his game keeps crashing during ep 4 when gaap sends nanji to the shadow realm. Sorry im at work i have slow response. Just thought id report it since it may be important for the new exe or something
>
> its right when nanjo animates through the floor
> thyats when it crashes

[ep4-gap-experimental-crashlogs.zip](https://github.com/07th-mod/umineko-question/files/10377548/ep4-gap-experimental-crashlogs.zip)

We didn't fix the issue, and instead skipped the animation so the user could continue playing:

```asm
langen^...Even Kyrie had no way of eluding Gaap's capture.^\

;mov %Free2,10
;textoff
;bg Mdin_1dN,0
;mld c,$NAN_MajimeA1,22
;
;for %Free1 = 1 to 49
;resettimer
;msp msp_c,0,%Free2,0
;print 1
;inc %Free2
;waittimer 10
;next
;mcl c,1

se1v 52,100

advchar "19"
langjp:dwave_jp 0, nan_4e42:「うわぁ……！！」@
;＜南條
langen:dwave_eng 0, nan_4e42:^"Waahh...!!"^@
```

----

We had another report of the same issue today 2023-01-10:

They were using the normal script with the experimental engine/exe.

[stdout-stderr-2023-01-10.zip](https://github.com/07th-mod/umineko-question/files/10377445/stdout-stderr-2023-01-10.zip)

> - My game is crashing in the same place repeatedly in Episode 4 when Dr Nanjo's sprite is quickly pulled to the bottom of the screen
> - The bug occurs just after ...Even Kyrie had no way of eluding Gaap's capture is shown on the screen and I click next to move to the next panel
> - My operating system is Windows
> - I installed the game 1 Month ago
> - I am running the Full Patch with the experimental bug fixer
> - I installed the game using the Automatic Installer
> - My computer is a Gaming Laptop

They resolved the issue the same way by skipping the animation

----

This might be related to the other issue https://github.com/07th-mod/umineko-answer/issues/93 "Crash in ep5 with gap effect".

Il crash si verifica nel motore sperimentale durante un'animazione specifica (l'effetto di cattura di Gaap) nell'Episodio 4. Esamina i log di crash forniti e lo script assembly commentato nel corpo dell'issue. Cerca codice relativo alla gestione di animazioni o sprite per l'effetto 'gap' e confrontalo con l'issue #93 collegata in umineko-answer. Inizia eseguendo il gioco fino al punto del crash con il debug abilitato per identificare l'errore esatto.

Scritto dal modello di indicizzazione a partire dal testo della issue.