Fixing whitespace problems

llvm-svn: 111767
diff --git a/libcxx/test/utilities/utility/pairs/pairs.pair/piecewise.pass.cpp b/libcxx/test/utilities/utility/pairs/pairs.pair/piecewise.pass.cpp
index 6685166..45ba68a 100644
--- a/libcxx/test/utilities/utility/pairs/pairs.pair/piecewise.pass.cpp
+++ b/libcxx/test/utilities/utility/pairs/pairs.pair/piecewise.pass.cpp
@@ -31,5 +31,5 @@
         assert(p3.first == P1(3, nullptr));
         assert(p3.second == P2(nullptr, 4));
     }
-#endif
+#endif  // _LIBCPP_HAS_NO_VARIADICS
 }