Add back in MSVC version check for LLVM

alexcrichton · alexcrichton · commit 6da206b31442 · 2019-03-01T11:26:19.000-08:00
diff --git a/src/llvm-project b/src/llvm-project
@@ -1 +1 @@
-Subproject commit 38ad31bde8ff681d862dc0f96930a5dd9b7a472e
+Subproject commit 4fc9fb8245abe24680192535870c4522644a4212
