Make move_construction_triviality_helper noexcept

This helps increase performance and since this is the default, it should work anyway.

runtime/llvm-type_traits.h

@@ -90,7 +90,7 @@ template<typename T> union copy_construction_triviality_helper {
 template<typename T> union move_construction_triviality_helper {
     T t;
     move_construction_triviality_helper() = default;
-    move_construction_triviality_helper(move_construction_triviality_helper&&) = default;
+    move_construction_triviality_helper(move_construction_triviality_helper&&)  noexcept = default;
     ~move_construction_triviality_helper() = default;
 };