modules/video_chroma/davinci.c: remove inefficient memset() on each video output picture.

Remove inefficient memset() on the entire output picture. Instead the
framebuffer is expected to clear the display properly on initialization
and cleanup. This patch requires commit id: 09976bb9.

modules/video_chroma/davinci.c

 /*****************************************************************************
  * davinci.c : DaVinci resizer module
  *****************************************************************************
- * Copyright (C) 2008 M2X BV
+ * Copyright (C) 2008-2010 M2X BV
  * $Id$
  *
  * Authors: Antoine Cellerier <dionoea at videolan dot org>
@@ -332,10 +332,7 @@ static void DAVINCI_RESIZER( filter_t *p_filter, picture_t *p_source, picture_t
     if( !p_sys->b_scale &&
          p_filter->fmt_out.video.i_chroma == VLC_FOURCC('U','Y','V','Y') )
     {
-        /* Do not resize the picture to fullscreen, but center it instead.
-         * First make picture entirely black, then fill in the video.
-         */
-        memset( p_dest->p->p_pixels, 0x88888888, p_dest->p->i_pitch * p_dest->p->i_visible_lines );
+        /* Do not resize the picture to fullscreen, but center it instead. */
         for( int i_plane = 0; i_plane < p_dest->i_planes; i_plane++ )
         {
             if( p_source->p[i_plane].i_pitch == p_dest->p[i_plane].i_pitch )