Convert Binary Number in a Linked List to Integer LeetCode solution in Rust

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impl Solution {
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  pub fn get_decimal_value(head: Option<Box<ListNode>>) -> i32 {
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    let mut cur_node = &head;
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    let mut v = Vec::new();
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    while let Some(node) = cur_node {
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      v.push(node.val);
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      cur_node = &node.next;
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    }
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    v.iter()
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      .rev()
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      .enumerate()
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      .fold(0, |acc, (ind, val)| acc + *val * (1 << ind))
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  }
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}