Fix race in inflating thin locks.
Fix race in inflating thin locks.

Before we were inflating the lock word in the blocked state, this
meant that the garbage collector could be running at this point
resulting in the lock word changing from underneath us.

Bug: 14881707
Change-Id: If8897b2572a1b29a3cf44e5eb2e11c186236f519

treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst