9a118fbb49
Fix Dart_NewPersistentHandle so it won't break if passed one of these persistent handles. Reviewer: Should I document that these new functions return a persistent handle? Review URL: http://codereview.chromium.org//8446009 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@1230 260f80e4-7a28-3924-810f-c04153c831b5