gdk: Improve struct packing in places

Plug some holes in our structs by rearranging
a few fields. This is was done looking at
pahole output.

gdk/gdkcontentdeserializer.c

@@ -68,6 +68,7 @@ struct _GdkContentDeserializer
   GValue value;
   GInputStream *stream;
   int priority;
+  gboolean returned;
   GCancellable *cancellable;
   gpointer user_data;
   GAsyncReadyCallback callback;
@@ -77,7 +78,6 @@ struct _GdkContentDeserializer
   GDestroyNotify task_notify;
 
   GError *error;
-  gboolean returned;
 };
 
 struct _GdkContentDeserializerClass

gdk/gdkcontentserializer.c

@@ -70,6 +70,7 @@ struct _GdkContentSerializer
   GValue value;
   GOutputStream *stream;
   int priority;
+  gboolean returned;
   GCancellable *cancellable;
   gpointer user_data;
   GAsyncReadyCallback callback;
@@ -79,7 +80,6 @@ struct _GdkContentSerializer
   GDestroyNotify task_notify;
 
   GError *error;
-  gboolean returned;
 };
 
 struct _GdkContentSerializerClass

gdk/gdkdeviceprivate.h

@@ -40,13 +40,13 @@ struct _GdkDevice
   GdkInputSource source;
   gboolean has_cursor;
   GdkAxisFlags axis_flags;
+  GdkDeviceType type;
   GdkDisplay *display;
   /* The paired logical device for logical devices,
    * or the associated logical device for physical ones
    */
   GdkDevice *associated;
   GList *physical_devices;
-  GdkDeviceType type;
   GArray *axes;
   guint num_touches;
 

gdk/gdksurfaceprivate.h

@@ -48,8 +48,6 @@ struct _GdkSurface
   int x;
   int y;
 
-  guint8 resize_count;
-
   GdkGLContext *gl_paint_context;
 
   cairo_region_t *update_area;
@@ -63,16 +61,17 @@ struct _GdkSurface
   GdkSurfaceState old_state;
   GdkSurfaceState state;
 
+  guint8 resize_count;
+
   guint8 alpha;
   guint8 fullscreen_mode;
 
   guint modal_hint : 1;
-
   guint destroyed : 2;
-
   guint in_update : 1;
   guint frame_clock_events_paused : 1;
   guint autohide : 1;
+  guint shortcuts_inhibited : 1;
 
   struct {
     GdkGravity surface_anchor;
@@ -101,7 +100,6 @@ struct _GdkSurface
 
   cairo_region_t *opaque_region;
 
-  guint shortcuts_inhibited : 1;
   GdkSeat *current_shortcuts_inhibited_seat;
 };
 

gdk/x11/gdkkeys-x11.c

@@ -55,8 +55,8 @@ typedef struct _DirectionCacheEntry DirectionCacheEntry;
 struct _DirectionCacheEntry
 {
   guint serial;
-  Atom group_atom;
   PangoDirection direction;
+  Atom group_atom;
 };
 
 struct _GdkX11Keymap