Fix wrong callback type

(cherry picked from commit c89357bf60b11fefdceeb4100fad8d685c18e4dc)

src/render/ps2/SDL_render_ps2.c

@@ -55,7 +55,7 @@ typedef struct
 static int vsync_sema_id = 0;
 
 /* PRIVATE METHODS */
-static int vsync_handler(void)
+static int vsync_handler(int reason)
 {
     iSignalSema(vsync_sema_id);