fix fmt

Author: estebank

compiler/rustc_borrowck/src/diagnostics/region_errors.rs

@@ -642,7 +642,9 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
                     return;
                 };
                 let mut impls = vec![];
-                tcx.for_each_relevant_impl(parent, ty, |id| { impls.push(id); });
+                tcx.for_each_relevant_impl(parent, ty, |id| {
+                    impls.push(id);
+                });
                 if let [def_id] = impls[..] {
                     // The method we have is on the trait, but for `parent` we want to analyze the
                     // relevant impl instead.
@@ -734,7 +736,8 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
                     ..
                 }),
             ..
-        })) = tcx.hir().get_if_local(parent) {
+        })) = tcx.hir().get_if_local(parent)
+        {
             let suggestion = match lt.res {
                 hir::LifetimeName::ImplicitObjectLifetimeDefault if predicates.is_empty() => {
                     // `impl dyn Trait {}`