vaapi: fix destruction with --hwdec=haapi-copy

This is incomplete; the video chain will still hold some vaapi objects
after destroying the decoder and thus the vaapi context. This is very
bad. Fixing it would require something like refcounting the vaapi
context, but I don't really want to.

1 files changed, 4 insertions, 2 deletions

diff --git a/video/decode/vaapi.c b/video/decode/vaapi.c
index d4b1c41840..9142bc2a62 100644
--- a/video/decode/vaapi.c
+++ b/video/decode/vaapi.c
@@ -334,11 +334,12 @@ static struct mp_image *allocate_image(struct lavc_ctx *ctx, int format,
 
 static void destroy_va_dummy_ctx(struct priv *p)
 {
+    va_destroy(p->ctx);
+    p->ctx = NULL;
+    p->display = NULL;
     if (p->x11_display)
         XCloseDisplay(p->x11_display);
     p->x11_display = NULL;
-    va_destroy(p->ctx);
-    p->ctx = NULL;
 }
 
 // Creates a "private" VADisplay, disconnected from the VO. We just create a
@@ -372,6 +373,7 @@ static void uninit(struct lavc_ctx *ctx)
 
     destroy_decoder(ctx);
     va_surface_pool_release(p->pool);
+    p->pool = NULL;
 
     if (p->x11_display)
         destroy_va_dummy_ctx(p);