QL_ALIGN is a set of copies of roundup2, but it was missing an outer set of parentheses, which began to matter with r324538. Now, fully copy the parenthesization of roundup2.
To add a little more color, I believe r324538 is broken in ql_capture_drvr_state without this. Expression like this
hdr->rx_state_offset = hdr->tx_state_offset + QL_ALIGN(size, 64);
will yield the wrong result.
The gcc build is also currently broken because of the resulting warning.