Merge commit '2c32eace5ec4d1d7ca4e0220856cd2815ccc71b2'

* commit '2c32eace5ec4d1d7ca4e0220856cd2815ccc71b2':
  qsvdec: close the MFX decoder on uninit

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

libavcodec/qsvdec.c

@@ -293,6 +293,7 @@ static void close_decoder(QSVContext *q)
 {
     QSVFrame *cur;
 
+    if (q->session)
         MFXVideoDECODE_Close(q->session);
 
     cur = q->work_frames;