Fix -Werror build

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@204139 91177308-0d34-0410-b5e6-96231b3b80d8
tsan: lazily initialize deadlock detector runtime
this is necessaary because dlsym can call malloc, which can lock mutexes that we intercept



git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@204141 91177308-0d34-0410-b5e6-96231b3b80d8