decode: avoid leaks on failure in ff_get_buffer()

If the get_buffer() call fails, the frame might have some side data
already set. Make sure it gets freed.

1 files changed, 3 insertions, 0 deletions

diff --git a/libavcodec/decode.c b/libavcodec/decode.c
index 175a6fae4c..89a6d344c1 100644
--- a/libavcodec/decode.c
+++ b/libavcodec/decode.c
@@ -1154,6 +1154,9 @@ end:
         frame->height = avctx->height;
     }
 
+    if (ret < 0)
+        av_frame_unref(frame);
+
     return ret;
 }