Fixed bug 3702 - Clear error messages of SDL_LoadObject for optional libraries

Simon Hug

Some code in SDL loads libraries with SDL_LoadObject to get more information or use newer APIs. SDL_LoadObject may fail, set an error message and SDL will continue with some fallback code. Since SDL will overwrite the error or exit the function with a return value that indicates success, the error form SDL_LoadObject for the optional stuff might as well be cleared right away.

src/audio/SDL_audio.c

@@ -150,6 +150,7 @@ LoadLibSampleRate(void)
     SDL_assert(SRC_lib == NULL);
     SRC_lib = SDL_LoadObject(SDL_LIBSAMPLERATE_DYNAMIC);
     if (!SRC_lib) {
+        SDL_ClearError();
         return SDL_FALSE;
     }