Crashed trying to use an FFI function that takes multiple arrays

[ArseniyKorobenko]

crash log:

The application panicked (crashed).
Message:  called `Option::unwrap()` on a `None` value
Location: C:\Users\███\.cargo\registry\src\index.crates.io-6f17d22bba15001f\uiua-0.9.2\src\ffi.rs:604

Backtrace omitted.

Run with RUST_BACKTRACE=1 environment variable to display it.
Run with RUST_BACKTRACE=full to include source snippets.
Error: The interpreter has crashed!
  Hooray! You found a bug!
  Please report this at http://github.com/uiua-lang/uiua/issues/new or on Discord at https://discord.gg/9CU2ME4kmn.

  code:
  test.ua:3:7
  at test.ua:3:7
3 | Lib ← &ffi ⊂□"calcdll.dll"

Uiua code:

# Experimental!

Lib ← &ffi ⊂□"calcdll.dll"
Add ← Lib {"int" "Add" "int" "int"} {⊙∘}
Add 5 6 # works, 11

Sum ← Lib {"int" "Sum" "const int:1" "int"}
Sum {[1 2 3 4 5]} # works, 15

# crashes
Test ← Lib {"void" "test" "const int*" "int" "const int*" "int" "int*" "int"}
Test {:⧻.[0 1 2 3] :⧻.[4 1 1 0] :⧻.[0 0 0 0 0 0 0 0 0 0 0 0]}

# doesn't work either
Test ← Lib {"void" "test" "const int:1" "int" "const int:3" "int" "int:5" "int"}
Test {[0 1 2 3] [4 1 1 0] [0 0 0 0 0 0 0 0 0 0 0 0]}

C code:

#define CALL __cdecl

int CALL Add(int a, int b) {
    return (a + b);
}

int CALL Sum(const int* arr, int len)
{
    int s = 0;
    for (int i = 0; i < len; i++)
        s+=arr[i];
    return s;
}

void CALL test(
        const int* a, int len_a, 
        const int* b, int len_b, 
        int* c, int len_c)
{
    for (int i = 0; i < len_c; i++)
        c[i] = i;
}

[kaikalii]

This is fixed in 587ce8b.