update SDL3 from 3.2.20 to 3.4.2

libs/SDL3/examples/audio/04-multiple-streams/multiple-streams.c

@@ -1,5 +1,5 @@
 /*
- * This example code loads two .wav files, puts them an audio streams and
+ * This example code loads two .wav files, puts them in audio streams and
  * binds them for playback, repeating both sounds on loop. This shows several
  * streams mixing into a single playback device.
  *
@@ -65,10 +65,11 @@ SDL_AppResult SDL_AppInit(void **appstate, int argc, char *argv[])
         return SDL_APP_FAILURE;
     }
 
-    if (!SDL_CreateWindowAndRenderer("examples/audio/multiple-streams", 640, 480, 0, &window, &renderer)) {
+    if (!SDL_CreateWindowAndRenderer("examples/audio/multiple-streams", 640, 480, SDL_WINDOW_RESIZABLE, &window, &renderer)) {
         SDL_Log("Couldn't create window/renderer: %s", SDL_GetError());
         return SDL_APP_FAILURE;
     }
+    SDL_SetRenderLogicalPresentation(renderer, 640, 480, SDL_LOGICAL_PRESENTATION_LETTERBOX);
 
     /* open the default audio device in whatever format it prefers; our audio streams will adjust to it. */
     audio_device = SDL_OpenAudioDevice(SDL_AUDIO_DEVICE_DEFAULT_PLAYBACK, NULL);