tsan: add missing guard for DumpProcessMap call

[thanm]

Summary

Add a missing "#if !SANITIZER_GO" guard for a call to DumpProcessMap
in the Finalize hook (needed to build an updated Go race detector syso
image).

[thanm]

FYI, without this change, when I build an updated version of race_windows_amd64.syso and then run a -race test, I get:

##### Testing packages.
# compress/bzip2.test
C:\workdir\go\pkg\tool\windows_amd64\link.exe: running gcc failed: exit status 1
c:/programdata/chocolatey/lib/mingw/tools/install/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/11.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\gopher\AppData\Local\Temp\go-link-1811237475\000002.o:gotsan.cpp:(.text+0xf949): undefined reference to `__sanitizer::DumpProcessMap()'
collect2.exe: error: ld returned 1 exit status

[dvyukov]

Do you have LLVM commit access?

[thanm]

In D128641#3612087, @dvyukov wrote:

Do you have LLVM commit access?

Yes, although it has been a while since I checked anything in. I'll try to dig out my notes and submit it.

compiler-rt/lib/tsan/rtl/tsan_rtl.cpp

if (atomic_load(&bg_thread, memory_order_relaxed) == 0 &&
     SetSandboxingCallback(StopBackgroundThread);
   }
 #endif
 }
 
 int Finalize(ThreadState *thr) {
   bool failed = false;
 
+#if !SANITIZER_GO
   if (common_flags()->print_module_map == 1)
     DumpProcessMap();
+#endif
 
   if (flags()->atexit_sleep_ms > 0 && ThreadCount(thr) > 1)
     internal_usleep(u64(flags()->atexit_sleep_ms) * 1000);
 
   {
     // Wait for pending reports.
     ScopedErrorReportLock lock;
   }