tsan: fix memory leak



git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@177387 91177308-0d34-0410-b5e6-96231b3b80d8
tsan: symbolizer "flush caches" functinality



git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@177388 91177308-0d34-0410-b5e6-96231b3b80d8