HPCC-2998 Some calls to getRecordSize(NULL) remain

Removed some calls in dead code.

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
HPCC-2998 Some calls to getRecordSize(NULL) remain

Removed some more relatively simple cases.

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
Merge pull request #4105 from richardkchapman/getRecordSize-NULL

HPCC-2998 Some calls to getRecordSize(NULL) remain

Reviewed-by: Gavin Halliday <ghalliday@hpccsystems.com>