Clients blocked indefinitely when a java.lang.Error is thrown

When a java.lang.Exception is thrown in a thrift server method, client connections get closed properly. Please see the clean up code below.

https://github.com/apache/thrift/blob/master/lib/java/src/org/apache/thrift/server/TThreadPoolServer.java#L300

But if a java.lang.Error is thrown, that block of clean up code won't be executed and thus client connections may block indefinitely. I think the clean up code should be move to a finally block.

A pull request has been sent to Github:
https://github.com/apache/thrift/pull/618