Merge "Fix memory order and race bugs in Refbase.h & RefBase.cpp" am: 62212954ef
am: d657e639cf

* commit 'd657e639cf74e0ee5a32d0f67efe0097c3df17a1':
  Fix memory order and race bugs in Refbase.h & RefBase.cpp

Change-Id: I79106bb0399e7699d51d526235843504ab52708b