Rollup merge of #125477 - nnethercote:missed-rustfmt, r=compiler-errors

Run rustfmt on files that need it.

Somehow these files aren't properly formatted. By default `x fmt` and `x tidy` only check files that have changed against master, so if an ill-formatted file somehow slips in it can stay that way as long as it doesn't get modified(?)

I found these when I ran `x fmt` explicitly on every `.rs` file in the repo, while working on
https://github.com/rust-lang/compiler-team/issues/750.

compiler/rustc_lint/src/for_loops_over_fallibles.rs

@@ -62,7 +62,9 @@ impl<'tcx> LateLintPass<'tcx> for ForLoopsOverFallibles {
         };
 
         let (article, ty, var) = match adt.did() {
-            did if cx.tcx.is_diagnostic_item(sym::Option, did) && ref_mutability.is_some() => ("a", "Option", "Some"),
+            did if cx.tcx.is_diagnostic_item(sym::Option, did) && ref_mutability.is_some() => {
+                ("a", "Option", "Some")
+            }
             did if cx.tcx.is_diagnostic_item(sym::Option, did) => ("an", "Option", "Some"),
             did if cx.tcx.is_diagnostic_item(sym::Result, did) => ("a", "Result", "Ok"),
             _ => return,