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.
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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.