Most of the places where the status flags were reset, this happened
without holding m_observer_lock protecting these status flags. For most
of these statuses, they are only ever set/reset while also holding the
entity lock, but this is not true for all of them (DATA_AVAILABLE for
example), and thus there are some cases where retrieving the status
could lead to losing the raising of a (at least a DATA_AVAILABLE)
status.
The problem was introduced in ba46cb1140.
Signed-off-by: Erik Boasson <eb@ilities.com>
053229e508