[vala] sdl: Fix SDL_GetKeyName binding

[Jürg Billeter <juergbi src gnome org>]

commit 3f45fcc67e3130b3024efdace4967f194b18c7e3
Author: Jakob Westhoff <jakob westhoffswelt de>
Date:   Sun Mar 29 10:33:45 2009 +0200

    sdl: Fix SDL_GetKeyName binding
    
    Fixes bug 577129.
---
 vapi/sdl.vapi |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/vapi/sdl.vapi b/vapi/sdl.vapi
index f467f26..637eebc 100644
--- a/vapi/sdl.vapi
+++ b/vapi/sdl.vapi
@@ -588,7 +588,7 @@ namespace SDL {
 		public static void set_modifiers(KeyModifier modstate);
 
 		[CCode (cname="SDL_GetKeyName")]
-		public static string get_name(KeySymbol key);
+		public static weak string get_name(KeySymbol key);
 	}// Key
 
 	[CCode (cname="int", cprefix="SDLK_", cheader_filename="SDL_keysym.h")]