spacemanager: do not generate bogus error fix Already have 1 record(s) with pnfsPath= in implicit space reservations

do not generate bogus error fix Already have 1 record(s) with pnfsPath= in implicit space reservations

Patch: http://rb.dcache.org/r/5671/
Ticket: #number
Acked-by: Gerd, Al
Request: 2.2
Require-book: no
Require-notes: yes