GlobalsAAResult: Try to fix crash.

DeletionCallbackHandle holds GAR in its creation. It assumes;

  - It is registered as CallbackVH. It should not be moved in its life.
  - Its parent, GAR, may be moved.

To move list<DeletionCallbackHandle> GlobalsAAResult::Handles,
GAR must be updated with the destination in GlobalsAAResult(&&).

llvm-svn: 247534