Leak in forward-over-reverse AD through stack-array loop

I’m seeing a memory leak in Enzyme-generated code when using forward-over-reverse AD through a function that uses small stack arrays. Here is a codex-generated simplified reproducer: https://tinyurl.com/2chgfdv3. The reproducer has no explicit heap allocation in the reported function, but LSan reports leaked malloc allocations attributed to that function. I am also seeing `freeing without malloc` messages during compilation that may be related.

Start with the codex-generated reproducer at https://tinyurl.com/2chgfdv3 and run it under LSan, then inspect the Enzyme-generated code associated with the reported function. Done means the stack-array forward-over-reverse case produces no leaked malloc allocations and no related “freeing without malloc” messages during compilation.

Written by the indexing model from the issue text.