[scudo] Initialize the allocator in setTrackAllocationStacks.

Summary:
If this is called before the malloc call in a thread (or in the whole
program), the lazy initialization of the allocation can overwrite
Options.

Reviewers: pcc, cryptoad

Subscribers: #sanitizers, llvm-commits

Tags: #sanitizers

Differential Revision: https://reviews.llvm.org/D79130

GitOrigin-RevId: 7a555958f111094df4336209fd05522d07c483b0
1 file changed