[cheese] Silence a gtk-doc undeclared symbol warning

[David King <davidk src gnome org>]

commit 76d67096e5736293d8c4af243f8c2258cd77573a
Author: David King <amigadave amigadave com>
Date:   Tue Apr 28 08:13:10 2015 +0100

    Silence a gtk-doc undeclared symbol warning
    
    Split the typedef of CheeseVideoFormat out, so that gtk-doc does not
    report an undeclared symbol.

 libcheese/cheese-camera-device.h |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/libcheese/cheese-camera-device.h b/libcheese/cheese-camera-device.h
index 071eb6b..4590461 100644
--- a/libcheese/cheese-camera-device.h
+++ b/libcheese/cheese-camera-device.h
@@ -50,12 +50,14 @@ struct _CheeseCameraDevice
  * A description of the resolution, in pixels, of the format to capture with a
  * #CheeseCameraDevice.
  */
-typedef struct
+struct _CheeseVideoFormat
 {
   /*< public >*/
   gint width;
   gint height;
-} CheeseVideoFormat;
+};
+
+typedef struct _CheeseVideoFormat CheeseVideoFormat;
 
 GType cheese_video_format_get_type (void);