[libcxx] [test] Fix a typo in commented-out code.

[STL_MSFT]

Summary

Fix a typo in commented-out code.

[EricWF]

Deferring this to @mclow.lists because he commented out those tests and hopefully its' time they get uncommented.

[mclow.lists]

Landed as r274605

[STL_MSFT]

Closing - Marshall fixed the typo and uncommented the code.

test/std/utilities/meta/meta.unary/meta.unary.prop/is_constructible.pass.cpp

#endif
     test_is_not_constructible<A, void> ();
     test_is_not_constructible<void> ();
     test_is_not_constructible<int&> ();
     test_is_not_constructible<Abstract> ();
     test_is_not_constructible<AbstractDestructor> ();
 
 //  LWG 2560  -- postpone this test until bots updated
 //     test_is_not_constructible<void()> ();
-// #if TEST_STD_VERS > 11
+// #if TEST_STD_VER > 11
 //     test_is_not_constructible<void() const> ();
 //     test_is_not_constructible<void() volatile> ();
 //     test_is_not_constructible<void() &> ();
 //     test_is_not_constructible<void() &&> ();
 // #endif
 }