fix(tvix/eval): skip inherit with no explicit parent in let r/4528

Using `inherit` in a let-binding can not possibly have an effect, as
the given identifier is already bound exactly the same way in the
current scope.

This introduces a subtle bug that is fixed later on, as there
actually *is* a (single) condition where these inherits are
meaningful.

Change-Id: I8b24f0edcfe80db8153bb7e86cf478d36957d6f8
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6192
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>

0 files changed, 0 insertions, 0 deletions