avcodec/vda_h264: fix null pointer dereference

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

1 files changed, 5 insertions, 3 deletions

diff --git a/libavcodec/vda_h264.c b/libavcodec/vda_h264.c
index 2bb45c317e..4caed5e8f7 100644
--- a/libavcodec/vda_h264.c
+++ b/libavcodec/vda_h264.c
@@ -274,9 +274,11 @@ int ff_vda_destroy_decoder(struct vda_context *vda_ctx)
 static int vda_h264_uninit(AVCodecContext *avctx)
 {
     VDAContext *vda = avctx->internal->hwaccel_priv_data;
-    av_freep(&vda->bitstream);
-    if (vda->frame)
-        CVPixelBufferRelease(vda->frame);
+    if (vda) {
+        av_freep(&vda->bitstream);
+        if (vda->frame)
+            CVPixelBufferRelease(vda->frame);
+    }
     return 0;
 }