HPCC-11280 Fix trivial clang warning about nested comments

Signed-off-by: Gavin Halliday <gavin.halliday@lexisnexis.com>
Merge pull request #5754 from ghalliday/issue11280b

HPCC-11280 Fix trivial clang warning about nested comments

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>