pculture/miro — pull request #116 by paulswartz (2011-12-05 16:21:56+00:00)
Title: bz18205. better handling of WNDPROC in DeviceTracker

There was a race condition when setting up our WNDPROC callback,
where our callback was set up before we had the old WNDPROC stored
to call. Now, we try to get the WNDPROC callback before setting
up our callback, and logging a warning if that doesn't work.