add: }
context: mixSDL_SourcePlay (mixSDL_Object srcobj){	mixSDL_Source *src = (mixSDL_Source *) srcobj;	if (!src)	{		mixSDL_SetError (MIX_INVALID_NAME);#ifdef DEBUG		fprintf (stderr, "mixSDL_SourcePlay() called with null source\n");#endif		return;	}	mixSDL_LockMutex (src_mutex);	if (src->magic != mixSDL_srcMagic)	{		mixSDL_SetError (MIX_INVALID_NAME);#ifdef DEBUG		fprintf (stderr, "mixSDL_SourcePlay(): not a source\n");#endif	}	else /* should make the source active */	{		if (src->state < MIX_PLAYING)			mixSDL_SourceActivate (src);		src->state = MIX_PLAYING;	}	mixSDL_UnlockMutex (src_mutex);}