Auto merge of #80499 - matthiaskrgr:red_clos, r=estebank

remove redundant closures (clippy::redundant_closure)

src/tests.rs

@@ -55,7 +55,7 @@ impl NodeLabels<&'static str> {
     fn to_opt_strs(self) -> Vec<Option<&'static str>> {
         match self {
             UnlabelledNodes(len) => vec![None; len],
-            AllNodesLabelled(lbls) => lbls.into_iter().map(|l| Some(l)).collect(),
+            AllNodesLabelled(lbls) => lbls.into_iter().map(Some).collect(),
             SomeNodesLabelled(lbls) => lbls.into_iter().collect(),
         }
     }