Backport of "meta: Set the parent refcount of the GstStructure correctly" into 1.20
requested to merge tpm/gstreamer:backport-mr-2890-into-1.20-meta-set-parent-refcount-correctly into 1.20
Backport of !2890 (merged) "meta: Set the parent refcount of the GstStructure correctly".
Commits:
- a14df98f meta: Set the parent refcount of the GstStructure correctly