Add a codecType check in sceAtracSetHalfwayBufferAndGetID

Fix crash in #6363
![1](https://cloud.githubusercontent.com/assets/2177532/3346265/27bd7314-f8c4-11e3-92b5-265dd21583b5.png)
![2](https://cloud.githubusercontent.com/assets/2177532/3346707/c91d8e46-f8ca-11e3-8827-9574c2b9ea40.png)