hevc: delay ff_thread_finish_setup for hwaccel

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/hevc.c

@@ -2600,7 +2600,8 @@ static int hevc_frame_start(HEVCContext *s)
     if (ret < 0)
         goto fail;
 
-    ff_thread_finish_setup(s->avctx);
+    if (!s->avctx->hwaccel)
+        ff_thread_finish_setup(s->avctx);
 
     return 0;