Fixes OSThread race condition when the virtual method override startup is used and causes a pure virtual method call on multi-core machines.
Fixes OSThread race condition when the virtual method override startup is used and causes a pure virtual method call on multi-core machines.

bakerstu/openmrn,bakerstu/openmrn,bakerstu/openmrn,bakerstu/openmrn,bakerstu/openmrn,bakerstu/openmrn