[tsan] Disable failing malloc hook tests on darwin

[Northbadge]

Summary

Temporary measure while investigating. Tests don't fail on other sanitizers/platforms.

[Northbadge]

Proper fix @ D151865

compiler-rt/test/sanitizer_common/TestCases/malloc_hook.cpp

 // RUN: %clangxx -O2 %s -o %t && %run %t 2>&1 | FileCheck %s
 
 // Malloc/free hooks are not supported on Windows.
 // XFAIL: target={{.*windows-msvc.*}}
 
 // Must not be implemented, no other reason to install interceptors.
 // XFAIL: ubsan
 
+// FIXME: Test fails on darwin x86_64 with tsan
+// UNSUPPORTED: darwin && tsan
+
 #include <stdlib.h>
 #include <unistd.h>
 #include <sanitizer/allocator_interface.h>
 
 extern "C" {
 const volatile void *global_ptr;
 
 #define WRITE(s) write(1, s, sizeof(s))

compiler-rt/test/sanitizer_common/TestCases/malloc_hook_get_allocated_size_fast.cpp

 // RUN: %clangxx -O2 %s -o %t && %run %t 2>&1
 
 // Malloc/free hooks are not supported on Windows.
 // XFAIL: target={{.*windows-msvc.*}}
 
 // Must not be implemented, no other reason to install interceptors.
 // XFAIL: ubsan
 
+// FIXME: Test fails on darwin x86_64 with tsan
+// UNSUPPORTED: darwin && tsan
+
 #include <assert.h>
 #include <sanitizer/allocator_interface.h>
 #include <stdlib.h>
 #include <unistd.h>
 
 extern "C" {
 const volatile void *global_ptr;