Assume event queue is empty if another thread is blocking waiting for event.
If one thread was blocking waiting for an event and another thread sent a
reply to the X server, both threads got blocked until an event was
received.
(From OE-Core rev: 26842b2e4fc9c1d243ce412e845a5444cb03c4b9)
Signed-off-by: Jose Alarcon <jose.alarcon@ge.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
608c0ddf0d