MFC r196966: Lock Giant around vn_open_cred(). Remove innocent unnecessary call to NDFREE().
MFC r196966:
Lock Giant around vn_open_cred().
Remove innocent unnecessary call to NDFREE().

Approved by:	re (kensmith)

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