tsan: turn off COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED

[dvyukov]

Summary

All tsan interceptors check for initialization and/or initialize things
as necessary lazily, so we can pretend everything is initialized in the
COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED check to avoid double-checking
for initialization (this is only necessary for sanitizers that don't
handle initialization on common grounds).

[yln]

@vitalybuka
Hi Vitaly, this also broke a number of our bots; mostly for device simulators.
If we attempt this again, please ping me so I can test it locally before landing. :)

@dvyukov
Thanks for reverting Dmitry!

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

 #elif defined(__mips__)
 const int SA_SIGINFO = 8;
 const int SIG_SETMASK = 3;
 #else
 const int SA_SIGINFO = 4;
 const int SIG_SETMASK = 2;
 #endif
 
-#define COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED \
-  (!cur_thread_init()->is_inited)
+// All tsan interceptors check for initialization and/or initialize things
+// as necessary lazily, so we can pretend everything is initialized in this
+// check to avoid double-checking for initialization (this is only necessary for
+// sanitizers that don't handle initialization on common grounds).
+#define COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED false
 
 namespace __tsan {
 struct SignalDesc {
   bool armed;
   __sanitizer_siginfo siginfo;
   ucontext_t ctx;
 };