fix maxim-at3plus crash

Thanks @unknownbrackets
https://github.com/hrydgard/ppsspp/issues/4248
Digimon Adventure Voice probrem can be fixed later
(Hope this can be also fixed later : E[ME]: HLE\sceAtrac.cpp:1666 atracID: 1, avcodec_decode_audio4: Error decoding audio -22 later)