HAMMER_BUFSIZE_DOALIGN
HeaderJunkSize = HAMMER_BUFSIZE_DOALIGN(HeaderJunkSize);
bytes = HAMMER_BUFSIZE_DOALIGN(record->leaf.data_len);
bytes = HAMMER_BUFSIZE_DOALIGN(bytes);
bytes = HAMMER_BUFSIZE_DOALIGN(bytes);
data_len = HAMMER_BUFSIZE_DOALIGN(data_len);