[vala-extra-vapis: 2/2] sdl2: Fix SDL_JoystickGUID and SDL_JoystickGetGUIDString binding

[Rico Tzschichholz <ricotz src gnome org>]

commit e1d7cfa078b9ae738b4f575cb9de168cfc52302f
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Wed Aug 5 12:47:56 2020 +0200

    sdl2: Fix SDL_JoystickGUID and SDL_JoystickGetGUIDString binding

 sdl2.vapi | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/sdl2.vapi b/sdl2.vapi
index e3bbeaf..3d066ac 100644
--- a/sdl2.vapi
+++ b/sdl2.vapi
@@ -3037,6 +3037,7 @@ namespace SDL {
                }// Cursor
 
                [CCode (cname = "SDL_JoystickGUID", cheader_filename = "SDL2/SDL_joystick.h")]
+               [SimpleType]
                public struct JoystickGUID {
                        uint8 data[16];
                }
@@ -3081,13 +3082,13 @@ namespace SDL {
                        public Input.JoystickGUID get_guid ();
 
                        [CCode (cname = "SDL_JoystickGetGUIDString")]
-                       public static void get_guid_buffer (Input.JoystickGUID  guid, out uint8[] ps);
+                       public static void get_guid_buffer (Input.JoystickGUID guid, uint8[] ps);
 
                        //Convenience method, use guid_buffer if the GUID is truncated here
                        public static string get_guid_string (Input.JoystickGUID guid) {
                                uint8 buf[1024];
-                               get_guid_buffer (guid, out buf);
-                               return (string)buf;
+                               get_guid_buffer (guid, buf);
+                               return (string) buf;
                        }
 
                        [CCode (cname = "SDL_JoystickGetGUIDFromString")]