Fix audio outputs access aout internals directly

modules/audio_output/audioqueue.c

@@ -159,9 +159,9 @@ void AudioQueueCallback(void * inUserData, AudioQueueRef inAQ, AudioQueueBufferR
     aout_buffer_t *   p_buffer = NULL;
 
     if (p_aout) {
-        vlc_mutex_lock( &p_aout->output_fifo_lock );
+        vlc_mutex_lock( &p_aout->lock );
         p_buffer = aout_FifoPop( &p_aout->output.fifo );
-        vlc_mutex_unlock( &p_aout->output_fifo_lock );
+        vlc_mutex_unlock( &p_aout->lock );
     }
 
     if ( p_buffer != NULL ) {

modules/audio_output/sdl.c

@@ -251,9 +251,9 @@ static void SDLCallback( void * _p_aout, uint8_t * p_stream, int i_len )
      * hardware latency, or the buffer state. So we just pop data and throw
      * it at SDL's face. Nah. */
 
-    vlc_mutex_lock( &p_aout->output_fifo_lock );
+    vlc_mutex_lock( &p_aout->lock );
     p_buffer = aout_FifoPop( &p_aout->output.fifo );
-    vlc_mutex_unlock( &p_aout->output_fifo_lock );
+    vlc_mutex_unlock( &p_aout->lock );
 
     if ( p_buffer != NULL )
     {