mp_image: allow passing NULL to mp_image_new_custom_ref()

A minor simplification. Most callers don't need this, and there's no
good reason why the caller should provide an "initializer" like this.
(This function calls mp_image_new_dummy_ref(), which has no reason
for an initializer either.)

1 files changed, 1 insertions, 1 deletions

diff --git a/video/mp_image.c b/video/mp_image.c
index 0ca59c62c9..5adce213e5 100644
--- a/video/mp_image.c
+++ b/video/mp_image.c
@@ -230,7 +230,7 @@ struct mp_image *mp_image_new_dummy_ref(struct mp_image *img)
 {
     struct mp_image *new = talloc_ptrtype(NULL, new);
     talloc_set_destructor(new, mp_image_destructor);
-    *new = *img;
+    *new = img ? *img : (struct mp_image){0};
     for (int p = 0; p < MP_MAX_PLANES; p++)
         new->bufs[p] = NULL;
     new->hwctx = NULL;