kr_ps2: possible typo

[AKuHAK]

https://github.com/ps2dev/ps2sdk/blob/c45ad1d9421ec4d75ab80dc283b9165487374713/ee/kernel/src/iopheap.c#L65

kr_ps2: Looks like this is a typo, there should be: memset(&_ih_cd, 0, sizeof _ih_cd);

[fjtrujy]

@uyjulian could you verify this? probably we need to memset both