new invalid read errors in winhttp

[Dan Kegel]

http://kegel.com/wine/valgrind/logs/2009-11-10-17.32/diff-winhttp_notification.txt
http://kegel.com/wine/valgrind/logs/2009-11-10-17.32/vg-winhttp_notification.txt
has a bunch of new errors, all of which seem to look like this:

 Invalid read of size 4
    at  check_notification (notification.c:65)
    by  send_callback (session.c:56)
    by  close_connection (request.c:978)
    by  release_object (handle.c:79)
    by  task_thread (request.c:181)
    by  worker_thread_proc (threadpool.c:114)
    by  ??? (signal_i386.c:2279)
    by  call_thread_entry_point (signal_i386.c:2306)
    by  start_thread (thread.c:469)
    by  start_thread (pthread_create.c:297)
    by  clone (clone.S:130)
  Address 0x7f21f8f8 is not stack'd, malloc'd or (recently) free'd

but I don't see any recent changes in that area?
- Dan