Adding an {.out.} parameter to a ufunc causes a Unreal Engine crash
Hi,

Opening this as suggested from Discord.
Specs:
- Windows 10 x64
- `Nim`: a little behind devel
- Unreal Engine 5.4.4

I tried using an `{.out.}` in a `ufunc` without actually using it and it compiles without problems but when using the function in Unreal Engine, it causes a crashes. Removing the `{.out.}` parameter works without crashing. Here is the code:
```nim
uClass UGeneralLibrary of UBlueprintFunctionLibrary:
    ufunc(BlueprintCallable, Static):
        proc ThrusterControl(
                DirectionValX: float,
                DirectionValY: float,
                ThrusterLeft {.out.}: bool, # <- This causes a runtime exception!
                ) =
            
            if DirectionValX == 1.0:
                log "Thruster animate: left"
            elif DirectionValX == -1.0:
                log "Thruster animate: right"
            elif DirectionValY == 1.0:
                log "Thruster animate: backward"
            elif DirectionValY == -1.0:
                log "Thruster control: forward"
```
Here is the error report from UE:
```
LoginId:d41fe4dd4932d196553fe1b1881c7ff7
EpicAccountId:1235f2e0762c496e9304f46f278e9aa3

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000008

game_2
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_Engine
UnrealEditor_EnhancedInput
UnrealEditor_EnhancedInput
UnrealEditor_EnhancedInput
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
kernel32
ntdll
```
![image](https://github.com/user-attachments/assets/b4416c33-ade5-4fd2-8e9e-661b2c90d0da)

