Fix Windows test of resolveSymbolicLinks

tests/standalone/io/resolve_symbolic_links_test.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 //
 // Dart test program for testing FileSystemEntity.resolveSymbolicLinks
 
 import "package:expect/expect.dart";
 import "package:path/path.dart";
 import "package:async_helper/async_helper.dart";
 import 'dart:async';
@@ skipping 43 matching lines @@
             testLink(join(temp, 'link1', '..', '..', 'link1'))]);
       }
     })
     .then((_) {
       Directory.current = temp;
       return Future.wait([
           testFile('dir1/dir2/file2'),  // Test forward slashes on Windows too.
           testFile('link1/file2'),
           testFile(join('dir1', '..', 'dir1', '.', 'file1')),
           testDir('.'),
-          testDir('link1/.'),
           testLink('link1')]);
     })
     .then((_) {
       Directory.current = 'link1';
       if (Platform.isWindows) {
         return Future.wait([
           testFile('file2'),
           // Windows applies '..' to a link without resolving the link first.
           testFile('..\\dir1\\file1'),
-          testDir('.'),
+          testLink('.'),
           testDir('..'),
           testLink('..\\link1')]);
       } else {
         return Future.wait([
           testFile('file2'),
           // On non-Windows the link is changed to dir1/dir2 before .. happens.
           testFile('../dir2/file2'),
           testDir('.'),
           testDir('..'),
+          testDir('link1/.'),
           testLink('../../link1')]);
       }
     })
-    .whenComplete(() => tempDir.delete(recursive: true));
+    .whenComplete(() {
+      Directory.current = testsDir;
+      tempDir.delete(recursive: true);
+    });
   }));
 }
 
 Future makeEntities(String temp) {
   return new Directory(join(temp, 'dir1', 'dir2')).create(recursive: true)
       .then((_) => new File(join(temp, 'dir1', 'dir2', 'file2')).create())
       .then((_) => new File(join(temp, 'dir1', 'file1')).create())
       .then((_) => new Link(join(temp, 'link1'))
             .create(join(temp, 'dir1', 'dir2')));
 }
@@ skipping 38 matching lines @@
     Expect.isTrue(isAbsolute(resolved));
     // Test that resolveSymbolicLinks removes all links, .., and . segments.
     Expect.isFalse(resolved.contains('..'));
     Expect.isFalse(resolved.contains('./'));
     Expect.isFalse(resolved.contains('link1'));
     return new Link(name).target()
         .then((targetName) => FileSystemEntity.identical(targetName, resolved))
         .then((identical) => Expect.isTrue(identical));
   });
 }