ffplay: remove unneeded avcodec_get_frame_defaults

Signed-off-by: Marton Balint <cus@passwd.hu>

ffplay.c

@@ -1922,7 +1922,6 @@ static int video_thread(void *arg)
         while (is->paused && !is->videoq.abort_request)
             SDL_Delay(10);
 
-        avcodec_get_frame_defaults(frame);
         av_free_packet(&pkt);
 
         ret = get_video_frame(is, frame, &pkt, &serial);
@@ -1965,7 +1964,6 @@ static int video_thread(void *arg)
         if (ret < 0)
             goto the_end;
         av_frame_unref(frame);
-        avcodec_get_frame_defaults(frame);
         av_free_packet(&pkt);
 
         while (ret >= 0) {