Auto merge of #111671 - Dylan-DPC:rollup-1jy5r16, r=Dylan-DPC

Rollup of 6 pull requests

Successful merges:

 - #110145 (Share slice of bytes)
 - #111043 (Stabilize feature `cstr_is_empty`)
 - #111648 (Remove `LangItems::require`)
 - #111649 (Add derive for `core::marker::ConstParamTy`)
 - #111654 (Add a conversion from `&mut T` to `&mut UnsafeCell<T>`)
 - #111661 (Erase regions of type in `offset_of!`)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

clippy_lints/src/matches/redundant_pattern_match.rs

@@ -289,10 +289,11 @@ fn is_pat_variant(cx: &LateContext<'_>, pat: &Pat<'_>, path: &QPath<'_>, expecte
     let Some(id) = cx.typeck_results().qpath_res(path, pat.hir_id).opt_def_id() else { return false };
 
     match expected_item {
-        Item::Lang(expected_lang_item) => {
-            let expected_id = cx.tcx.lang_items().require(expected_lang_item).unwrap();
-            cx.tcx.parent(id) == expected_id
-        },
+        Item::Lang(expected_lang_item) => cx
+            .tcx
+            .lang_items()
+            .get(expected_lang_item)
+            .map_or(false, |expected_id| cx.tcx.parent(id) == expected_id),
         Item::Diag(expected_ty, expected_variant) => {
             let ty = cx.typeck_results().pat_ty(pat);