[Support] Also check the value for HAVE_PTHREAD_(SETNAME/SET_NAME)_NP (#156294)

As was already done for HAVE_PTHREAD_(GETNAME/GET_NAME)_NP

Author: brad0

llvm/lib/Support/Unix/Threading.inc

@@ -194,9 +194,9 @@ void llvm::set_thread_name(const Twine &Name) {
   if (get_max_thread_name_length() > 0)
     NameStr = NameStr.take_back(get_max_thread_name_length() - 1);
   (void)NameStr;
-#if defined(HAVE_PTHREAD_SET_NAME_NP)
+#if defined(HAVE_PTHREAD_SET_NAME_NP) && HAVE_PTHREAD_SET_NAME_NP
   ::pthread_set_name_np(::pthread_self(), NameStr.data());
-#elif defined(HAVE_PTHREAD_SETNAME_NP)
+#elif defined(HAVE_PTHREAD_SETNAME_NP) && HAVE_PTHREAD_SETNAME_NP
 #if defined(__NetBSD__)
   ::pthread_setname_np(::pthread_self(), "%s",
                        const_cast<char *>(NameStr.data()));