[gtk+] tests: Make gtkgears compile without complaints

[Benjamin Otte <otte src gnome org>]

commit e0040acefc2f5b7a8f781192654b28b021467e88
Author: Benjamin Otte <otte redhat com>
Date:   Tue Oct 14 14:33:08 2014 +0200

    tests: Make gtkgears compile without complaints

 tests/gtkgears.c |    2 +-
 tests/gtkgears.h |   14 +++++++++-----
 2 files changed, 10 insertions(+), 6 deletions(-)
---
diff --git a/tests/gtkgears.c b/tests/gtkgears.c
index 232fd3c..2979671 100644
--- a/tests/gtkgears.c
+++ b/tests/gtkgears.c
@@ -48,7 +48,7 @@ static gboolean gtk_gears_tick          (GtkWidget     *widget,
                                          gpointer       user_data);
 
 GtkWidget *
-gtk_gears_new ()
+gtk_gears_new (void)
 {
   GtkWidget *gears;
 
diff --git a/tests/gtkgears.h b/tests/gtkgears.h
index 145e9c2..0109723 100644
--- a/tests/gtkgears.h
+++ b/tests/gtkgears.h
@@ -20,16 +20,20 @@ enum {
 #define GTK_IS_GEARS(inst)  (G_TYPE_CHECK_INSTANCE_TYPE ((inst), \
                              GTK_TYPE_GEARS))
 
-typedef struct {
+typedef struct _GtkGears GtkGears;
+typedef struct _GtkGearsClass GtkGearsClass;
+
+struct _GtkGears {
   GtkGLArea parent;
-} GtkGears;
+};
 
-typedef struct {
+struct _GtkGearsClass {
   GtkGLAreaClass parent_class;
-} GtkGearsClass;
+};
 
+GType      gtk_gears_get_type      (void) G_GNUC_CONST;
 
-GtkWidget *gtk_gears_new           ();
+GtkWidget *gtk_gears_new           (void);
 void       gtk_gears_set_axis      (GtkGears *gears,
                                     int       axis,
                                     double    value);