This patch fixes the commit "staging/gdm72xx: cleanup little at
gdm_wimax_event_rcv" (8df858ea76b76dde9a39d4edd9aaded983582cfe),
which mishandles the reference counting of wm_event.
Signed-off-by: Ben Chan <benchan@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>