da05bff96c
This one was a bit more involved than the previous ones, since the mismatch was intentional here, and happened on a non-trivial type. It was done because the new object (managed by the `unique_ptr`) steals the internal data of the original object. Calling `MEM_delete` (and therefore the destructor of the `AssetMetaData` object) would then lead to access-after-free and double-freeing errors. This is addressed by adding two new 'copy' and 'move' constructors to this type. The copy one ensures that deep-copy of internal data happens as expected, and allows to simplify greatly the code in `BKE_asset_metadata_copy`, which becomes a mere wrapper around it. The move one allows `make_unique` to properly steal (and clear) the internal data of the source object, which can then safely be deleted. Pull Request: https://projects.blender.org/blender/blender/pulls/123693
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