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Update E0716.md for clarity

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When reading through this, I got slightly hung up thinking the `let` it was referring to was the `let tmp` on line 25, which was confusing considering the comment states that the temporary is freed at the end of the block. I think adding this clarification could potentially help some beginners like myself without being overly verbose.
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carschandler 2024-02-05 15:23:05 -06:00 committed by GitHub
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compiler/rustc_error_codes/src/error_codes/E0716.md
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@ -30,8 +30,9 @@ let q = p;
Whenever a temporary is created, it is automatically dropped (freed) according
to fixed rules. Ordinarily, the temporary is dropped at the end of the enclosing
statement -- in this case, after the `let`. This is illustrated in the example
above by showing that `tmp` would be freed as we exit the block.
statement -- in this case, after the outer `let` that assigns to `p`. This is
illustrated in the example above by showing that `tmp` would be freed as we exit
the block.
To fix this problem, you need to create a local variable to store the value in
rather than relying on a temporary. For example, you might change the original