Use node_type_opt over node_type

clippy_lints/src/shadow.rs

@@ -154,11 +154,15 @@ fn check_local<'a, 'tcx>(cx: &LateContext<'a, 'tcx>, local: &'tcx Local<'_>, bin
 }
 
 fn is_binding(cx: &LateContext<'_, '_>, pat_id: HirId) -> bool {
-    let var_ty = cx.tables.node_type(pat_id);
+    let var_ty = cx.tables.node_type_opt(pat_id);
+    if let Some(var_ty) = var_ty {
         match var_ty.kind {
             ty::Adt(..) => false,
             _ => true,
         }
+    } else {
+        false
+    }
 }
 
 fn check_pat<'a, 'tcx>(

tests/ui/crashes/shadow.rs

@@ -0,0 +1,6 @@
+fn main() {
+    let x: [i32; {
+        let u = 2;
+        4
+    }] = [2; { 4 }];
+}