Fixing whitespace problems

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@111750 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/cstddef b/include/cstddef
index 8cba5f8..a5297ec 100644
--- a/include/cstddef
+++ b/include/cstddef
@@ -18,7 +18,7 @@
 
     offsetof(type,member-designator)
     NULL
- 
+
 namespace std
 {
 
@@ -39,7 +39,7 @@
 #define __need_NULL
 #define __need_ptrdiff_t
 #define __need_size_t
-#endif
+#endif  // __GLIBC__
 
 #include <stddef.h>
 
@@ -65,11 +65,11 @@
     _LIBCPP_ALWAYS_INLINE operator int __nat::*() const {return 0;}
 
     template <class _Tp>
-        _LIBCPP_ALWAYS_INLINE 
+        _LIBCPP_ALWAYS_INLINE
         operator _Tp* () const {return 0;}
 
     template <class _Tp, class _Up>
-        _LIBCPP_ALWAYS_INLINE 
+        _LIBCPP_ALWAYS_INLINE
         operator _Tp _Up::* () const {return 0;}
 
     friend _LIBCPP_ALWAYS_INLINE bool operator==(nullptr_t, nullptr_t) {return true;}
@@ -120,11 +120,11 @@
 
 #define nullptr _STD::__get_nullptr_t()
 
-#else
+#else  // _LIBCPP_HAS_NO_NULLPTR
 
 typedef decltype(nullptr) nullptr_t;
 
-#endif
+#endif  // _LIBCPP_HAS_NO_NULLPTR
 
 _LIBCPP_END_NAMESPACE_STD