Fix flaky MessageTransport test (again).

It is possible that an IOException can occur in this test. Also, get rid of a redundant test.

Review by: kjin@google.com

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@7772 8db76d5a-ed1c-0410-87a9-c151d255dfc7
1 file changed