Properly record the processID in a TRef (in case of large number of refs).
Properly record the processID in a TRef (in case of large number of refs).

This fixes https://root.cern.ch/phpBB3/viewtopic.php?f=3&t=21637.

tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot