updated dynapi after SDL_GDKGetDefaultUser addition

src/dynapi/SDL_dynapi.sym

@@ -900,6 +900,7 @@ SDL3_0.0.0 {
     SDL_WriteS32BE;
     SDL_WriteS64LE;
     SDL_WriteS64BE;
+    SDL_GDKGetDefaultUser;
     # extra symbols go here (don't modify this line)
   local: *;
 };

src/dynapi/SDL_dynapi_overrides.h

@@ -925,3 +925,4 @@
 #define SDL_WriteS32BE SDL_WriteS32BE_REAL
 #define SDL_WriteS64LE SDL_WriteS64LE_REAL
 #define SDL_WriteS64BE SDL_WriteS64BE_REAL
+#define SDL_GDKGetDefaultUser SDL_GDKGetDefaultUser_REAL

src/dynapi/SDL_dynapi_procs.h

@@ -969,3 +969,6 @@ SDL_DYNAPI_PROC(SDL_bool,SDL_WriteS32LE,(SDL_RWops *a, Sint32 b),(a,b),return)
 SDL_DYNAPI_PROC(SDL_bool,SDL_WriteS32BE,(SDL_RWops *a, Sint32 b),(a,b),return)
 SDL_DYNAPI_PROC(SDL_bool,SDL_WriteS64LE,(SDL_RWops *a, Sint64 b),(a,b),return)
 SDL_DYNAPI_PROC(SDL_bool,SDL_WriteS64BE,(SDL_RWops *a, Sint64 b),(a,b),return)
+#ifdef __GDK__
+SDL_DYNAPI_PROC(int,SDL_GDKGetDefaultUser,(XUserHandle *a),(a),return)
+#endif