Buffer overrun in sample ASL

[nv-epg]

Noting this excerpt from the code block under Secure eSPI Read:

Method (_BST) {
    // *snip*
    Name(BUFF, Buffer(32){}) // Create buffer for send/recv data
    // *snip*
    CreateByteField(BUFF,18, CMDD) // In – First byte of command
    CreateDwordField(BUFF,19, BMA1) // In – Averaging Interval
    CreateField(BUFF,144,128,BSTD) // Out – 4 DWord BST data
    // *snip*
}

BUFF is 32 bytes, buf BSTD overflows into bytes 32-33. The comments make it pretty clear that BSTD is intended to be 4 DWORDs, so the length is correct. Is BUFF supposed to be 34 bytes long?