Postpone lsan tls allocation until required
Postpone lsan tls allocation until required

Summary:
This prevents InternalAlloc from being called before the sanitizers
are fully initialized.

Reviewers: kubamracek, kcc

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D31306

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@298947 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt