fix for bug 202593. The session returned by nssSlot_CreateSession doesn't
need its own lock. It is either protected by a higher-level lock (the
slot or module lock) or used by only one thread throughout its lifetime.
Modified Files: dev/devslot.c pk11wrap/dev3hack.c
git-svn-id: svn://10.0.0.236/trunk@142302 18797224-902f-48f8-a5cc-f745e15eee43