Fix cpplint whitespace/comma issues

Change-Id: I456fc8d80371d6dfc07e6d109b7f478c25602b65
diff --git a/runtime/base/macros.h b/runtime/base/macros.h
index 4a196f2..44a7f1e 100644
--- a/runtime/base/macros.h
+++ b/runtime/base/macros.h
@@ -125,7 +125,7 @@
 #define OFFSETOF_VOLATILE_MEMBER(t, f) \
   (reinterpret_cast<volatile char*>(&reinterpret_cast<t*>(16)->f) - reinterpret_cast<volatile char*>(16)) // NOLINT
 
-#define PACKED(x) __attribute__ ((__aligned__(x),__packed__))
+#define PACKED(x) __attribute__ ((__aligned__(x), __packed__))
 
 #define LIKELY(x)       __builtin_expect((x), true)
 #define UNLIKELY(x)     __builtin_expect((x), false)