Fix memory order and race bugs in Refbase.h & RefBase.cpp am: 70a46d674a
am: bf3c130cde

* commit 'bf3c130cdecb31dc43ee545d526d91c074e4f872':
  Fix memory order and race bugs in Refbase.h & RefBase.cpp

Change-Id: I645fc1a87703283a7c6ce7c64c2e368edcee02b4