haiku: fix use of SDL_ConvertSurfaceFormat

src/video/haiku/SDL_bvideo.cc

@@ -190,7 +190,7 @@ static SDL_Cursor * HAIKU_CreateCursor(SDL_Surface * surface, int hot_x, int hot
     SDL_Cursor *cursor;
     SDL_Surface *converted;
 
-    converted = SDL_ConvertSurfaceFormat(surface, SDL_PIXELFORMAT_ARGB8888, 0);
+    converted = SDL_ConvertSurfaceFormat(surface, SDL_PIXELFORMAT_ARGB8888);
     if (converted == NULL) {
         return NULL;
     }