fix format

paddle/fluid/platform/macros.h

@@ -25,8 +25,8 @@ limitations under the License. */
   classname& operator=(classname&&) = delete
 #endif
 
-#ifndef PADDLE_WITH_MUSL 
+#ifndef PADDLE_WITH_MUSL
 #if defined(__FLT_MAX__)
 #define FLT_MAX __FLT_MAX__
 #endif  // __FLT_MAX__
-#endif
+#endif  // PADDLE_WITH_MUSL