[Sanitizer] Switch to common mmap/munmap routines in ASan run-time.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@158078 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/asan/asan_thread.cc b/lib/asan/asan_thread.cc
index 5db470c..da397bb 100644
--- a/lib/asan/asan_thread.cc
+++ b/lib/asan/asan_thread.cc
@@ -29,7 +29,7 @@
 AsanThread *AsanThread::Create(u32 parent_tid, thread_callback_t start_routine,
                                void *arg, AsanStackTrace *stack) {
   uptr size = RoundUpTo(sizeof(AsanThread), kPageSize);
-  AsanThread *thread = (AsanThread*)AsanMmapSomewhereOrDie(size, __FUNCTION__);
+  AsanThread *thread = (AsanThread*)MmapOrDie(size, __FUNCTION__);
   thread->start_routine_ = start_routine;
   thread->arg_ = arg;
 
@@ -63,7 +63,7 @@
   ClearShadowForThreadStack();
   fake_stack().Cleanup();
   uptr size = RoundUpTo(sizeof(AsanThread), kPageSize);
-  AsanUnmapOrDie(this, size);
+  UnmapOrDie(this, size);
 }
 
 void AsanThread::Init() {