Fix Listing 19-10 for ch19-02-refutability chapter #4364
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The listing is supposed to show why it doesn't make sense to use "if let" with an irrefutable pattern. Currently the live book is showing a "let else" which could cause confusion for readers.
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The listing is supposed to show why it doesn't make sense to use "if let" with an irrefutable pattern. Currently the live book is showing a "let else" which could cause confusion for readers. For example: https://doc.rust-lang.org/book/ch19-02-refutability.html#listing-19-10. This commit should fix the confusion.