Fix a libartd.so boot crash when kMovingCollector is true.
Fix a libartd.so boot crash when kMovingCollector is true.

Bug: 11828452
Change-Id: I208a99d7ee7cb6af37046387e97156e3b240cda6

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