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Auto merge of #11035 - y21:issue10729, r=Jarcho
[`option_if_let_else`]: suggest `.as_ref()` if scrutinee is of type `&Option<_>` Fixes #10729 `Option::map_or` takes ownership, so if matching on an `&Option<_>`, we need to suggest `.as_ref()` before calling `map_or` to get the same effect and to not cause a borrowck error. changelog: [`option_if_let_else`]: suggest `.as_ref()`/`.as_mut()` if scrutinee is of type `&Option<_>`/`&mut Option<_>`
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