Get the unittests compiling when building with cmake and the setting
-DLLVM_ENABLE_THREADS=false.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181788 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Support/ManagedStatic.cpp b/unittests/Support/ManagedStatic.cpp
index 8ddad38..1497f4e 100644
--- a/unittests/Support/ManagedStatic.cpp
+++ b/unittests/Support/ManagedStatic.cpp
@@ -19,7 +19,8 @@
 
 namespace {
 
-#if defined(HAVE_PTHREAD_H) && !__has_feature(memory_sanitizer)
+#if LLVM_ENABLE_THREADS != 0 && defined(HAVE_PTHREAD_H) && \
+  !__has_feature(memory_sanitizer)
 namespace test1 {
   llvm::ManagedStatic<int> ms;
   void *helper(void*) {