Fix clippy shadowing

[EricLBuehler]

Should reduce memory usage and hopefully increase speed...

[github-actions]

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[EricLBuehler]

@chenwanqq I cannot measure any T/s speedup. I think that because we are using a GPU and the commands are async, the Rust drop code runs quickly enough that there is no difference.

I implemented this change only for the models/quantized_llama.rs code.

[chenwanqq]

@chenwanqq I cannot measure any T/s speedup. I think that because we are using a GPU and the commands are async, the Rust drop code runs quickly enough that there is no difference.

I implemented this change only for the models/quantized_llama.rs code.

I think the problem might not be about speed, but about peak memory usage.🧐 For instance, whether it can run a model within limited memory space or how many tokens it can process for a given model.