Fixing whitespace problems

llvm-svn: 111758
diff --git a/libcxx/test/input.output/string.streams/istringstream/istringstream.cons/move.pass.cpp b/libcxx/test/input.output/string.streams/istringstream/istringstream.cons/move.pass.cpp
index dfa4234..5358789 100644
--- a/libcxx/test/input.output/string.streams/istringstream/istringstream.cons/move.pass.cpp
+++ b/libcxx/test/input.output/string.streams/istringstream/istringstream.cons/move.pass.cpp
@@ -44,5 +44,5 @@
         ss >> i;
         assert(i == 456);
     }
-#endif
+#endif  // _LIBCPP_MOVE
 }