Workaround MSVC (14.29.30133) compilation failure

Author: Aleksei.Glushko

Diff for: llvm/lib/LTO/ThinLTOCodeGenerator.cpp

@@ -1783,7 +1783,7 @@ void ThinLTOCodeGenerator::run() {
     };
     struct ModuleInfo {
       std::unique_ptr<AsyncModuleCacheEntry> Entry;
-      std::atomic<unsigned> State = ModuleState::MS_Empty;
+      std::atomic<unsigned> State = 0b0000;
       std::unique_ptr<MemoryBuffer> ComputedBuffer;
       std::unique_ptr<MemoryBuffer> CachedBuffer;
     };