HPCC-11838 Don't hoist expressions from within SIZEOF()

Signed-off-by: Gavin Halliday <gavin.halliday@lexisnexis.com>
Merge pull request #6251 from ghalliday/issue11838

HPCC-11838 Don't hoist expressions from within SIZEOF()

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>