Merge commit 'ac4a5e3a'

* commit 'ac4a5e3a':
  pthreads_frame: Do not leak on failure path

See: 11679e1bMerged-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/pthread_frame.c

@@ -651,8 +651,8 @@ int ff_frame_thread_init(AVCodecContext *avctx)
 
         p->frame = av_frame_alloc();
         if (!p->frame) {
-            err = AVERROR(ENOMEM);
             av_freep(&copy);
+            err = AVERROR(ENOMEM);
             goto error;
         }