libvlc: Make media_descriptor_t internal.

include/vlc/libvlc_structures.h

@@ -75,12 +75,7 @@ typedef enum {
 
 /**@} */
 
-
-typedef struct {
-    bool                b_preparsed;
-    input_item_t      * p_input_item;
-    libvlc_instance_t * p_libvlc_instance;
-} libvlc_media_descriptor_t;
+typedef struct libvlc_media_descriptor_t libvlc_media_descriptor_t;
 
 /**@} */
 

src/control/libvlc_internal.h

@@ -75,6 +75,12 @@ struct libvlc_instance_t
     struct libvlc_callback_entry_list_t *p_callback_list;
 };
 
+typedef struct {
+    bool                b_preparsed;
+    input_item_t      * p_input_item;
+    libvlc_instance_t * p_libvlc_instance;
+} libvlc_media_descriptor_t;
+
 struct libvlc_input_t
 {
     int i_input_id;  ///< Input object id. We don't use a pointer to