Fixing whitespace problems

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@111750 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/__tuple b/include/__tuple
index 642cff8..7426ed3 100644
--- a/include/__tuple
+++ b/include/__tuple
@@ -21,7 +21,7 @@
 
 #include <__tuple_03>
 
-#else
+#else  // _LIBCPP_HAS_NO_VARIADICS
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
@@ -41,7 +41,6 @@
 template <class _Tp, size_t _Size> struct __tuple_like<array<_Tp, _Size> > : true_type {};
 template <class _Tp, size_t _Size> struct __tuple_like<const array<_Tp, _Size> > : true_type {};
 
-
 template <size_t _Ip, class ..._Tp>
 typename tuple_element<_Ip, tuple<_Tp...>>::type&
 get(tuple<_Tp...>&);