CAN queue size much lower than CandleLight

[CoryNessCTR]

CAN_QUEUE_SIZE currently needs to be defined at 4 as opposed to 64 in CandleLight to solve #1

If it's too large calloc won't allocate any memory and will return a null pointer. Specifically look for
struct gs_host_frame *msgbuf = calloc(CAN_QUEUE_SIZE, sizeof(struct gs_host_frame)); and ensure *msgbuf is not null