Type of SDL_GestureTouch.id is SDL_TouchID (only for SDL_gesture.c internal)

src/events/SDL_gesture.c

@@ -63,7 +63,7 @@ typedef struct {
 } SDL_DollarTemplate;
 
 typedef struct {
-    SDL_GestureID id;
+    SDL_TouchID id;
     SDL_FloatPoint res;
     SDL_FloatPoint centroid;
     SDL_DollarPath dollarPath;