Fix tidy error

src/librustc/ty/inhabitedness/mod.rs

@@ -263,9 +263,9 @@ impl<'a, 'gcx, 'tcx> TyS<'tcx> {
             },
             TyArray(ty, len) => {
                 match len.val.to_const_int().and_then(|i| i.to_u64()) {
-                    Some(n) if n != 0 => ty.uninhabited_from(visited, tcx),
                     // If the array is definitely non-empty, it's uninhabited if
                     // the type of its elements is uninhabited.
+                    Some(n) if n != 0 => ty.uninhabited_from(visited, tcx),
                     _ => DefIdForest::empty()
                 }
             }

src/test/compile-fail/empty-never-array.rs

@@ -17,7 +17,8 @@ enum Helper<T, U> {
 }
 
 fn transmute<T, U>(t: T) -> U {
-    let Helper::U(u) = Helper::T(t, []); //~ ERROR refutable pattern in local binding: `T(_, _)` not covered
+    let Helper::U(u) = Helper::T(t, []);
+    //~^ ERROR refutable pattern in local binding: `T(_, _)` not covered
     u
 }