[sysprof] visualizers: mark fields as private

[Christian Hergert <chergert src gnome org>]

commit 88af69c3ece4aca7f3848a715f2cc31b1abcb129
Author: Christian Hergert <chergert redhat com>
Date:   Wed May 16 12:44:29 2018 +0100

    visualizers: mark fields as private

 lib/visualizers/sp-visualizer-row.h |   18 ++----------------
 1 files changed, 2 insertions(+), 16 deletions(-)
---
diff --git a/lib/visualizers/sp-visualizer-row.h b/lib/visualizers/sp-visualizer-row.h
index 68a30e1..c7f6163 100644
--- a/lib/visualizers/sp-visualizer-row.h
+++ b/lib/visualizers/sp-visualizer-row.h
@@ -56,22 +56,8 @@ struct _SpVisualizerRowClass
   void (*set_reader) (SpVisualizerRow *self,
                       SpCaptureReader *reader);
 
-  gpointer _reserved1;
-  gpointer _reserved2;
-  gpointer _reserved3;
-  gpointer _reserved4;
-  gpointer _reserved5;
-  gpointer _reserved6;
-  gpointer _reserved7;
-  gpointer _reserved8;
-  gpointer _reserved9;
-  gpointer _reserved10;
-  gpointer _reserved11;
-  gpointer _reserved12;
-  gpointer _reserved13;
-  gpointer _reserved14;
-  gpointer _reserved15;
-  gpointer _reserved16;
+  /*< private >*/
+  gpointer _reserved[16];
 };
 
 void           sp_visualizer_row_set_reader       (SpVisualizerRow *self,