parity ops: Correctly recognize the end of the plex.  Previously we were running off the end and generating worrying but harmless messages about parity errors that wouldn't go away.
parity ops: Correctly recognize the end of the plex.  Previously we
were running off the end and generating worrying but harmless messages
about parity errors that wouldn't go away.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase