Only print the pointer to the first plane in ff_dprintf_picref().

To display the other planes is usually not useful and add noise to the
output.

Originally committed as revision 24843 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavfilter/avfilter.c

@@ -194,9 +194,9 @@ int avfilter_config_links(AVFilterContext *filter)
 void ff_dprintf_picref(void *ctx, AVFilterBufferRef *picref, int end)
 {
     dprintf(ctx,
-            "picref[%p data[%p, %p, %p, %p] linesize[%d, %d, %d, %d] pts:%"PRId64" pos:%"PRId64" a:%d/%d s:%dx%d]%s",
+            "picref[%p data:%p linesize[%d, %d, %d, %d] pts:%"PRId64" pos:%"PRId64" a:%d/%d s:%dx%d]%s",
             picref,
-            picref->data    [0], picref->data    [1], picref->data    [2], picref->data    [3],
+            picref->data[0],
             picref->linesize[0], picref->linesize[1], picref->linesize[2], picref->linesize[3],
             picref->pts, picref->pos,
             picref->video->pixel_aspect.num, picref->video->pixel_aspect.den, picref->video->w, picref->video->h,