transcode: typo

(cherry picked from commit 7a081904)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/stream_out/transcode/video.c

@@ -771,7 +771,7 @@ int transcode_video_process( sout_stream_t *p_stream, sout_stream_id_t *id,
                {
                    /* We can't modify the picture, we need to duplicate it */
                    p_pic2 = video_new_buffer_decoder( id->p_decoder );
-                   if( unlikely( p_pic2 != NULL ) )
+                   if( likely( p_pic2 != NULL ) )
                    {
                        picture_Copy( p_pic2, p_pic );
                        p_pic2->date = i_pts;