tsan: minor refactoring
use common helper macro



git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@195832 91177308-0d34-0410-b5e6-96231b3b80d8
tsan: do not leave verbosity>0 in tests



git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@195833 91177308-0d34-0410-b5e6-96231b3b80d8