AthAllocators: Fix potential deadlock.
In ArenaHeader::allocator(), we need to release the header lock before creating the LockedAllocator instance. Otherwise we can deadlock if an algorithm creates multiple allocators.
See ATR-28749.
In ArenaHeader::allocator(), we need to release the header lock before creating the LockedAllocator instance. Otherwise we can deadlock if an algorithm creates multiple allocators.
See ATR-28749.