Remove the obsolete ->signal != NULL check in watchdog().
Since ea6d290c ->signal can't be NULL.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20100610230948.GA25911@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>