HPCC-10134 - LogicalToPhysical file was not working

A missing line in the master handling of getFilePart was causing
the slaves to never receive the reply.

Signed-off-by: Jake Smith <jake.smith@lexisnexis.com>
Merge pull request #4933 from jakesmith/hpcc-10134

HPCC-10134 - LogicalToPhysical file was not working

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>