[PATCH] fix uninitialized variable in waitid(2)

Specify an initial value signal_struct's field stop_state whenever a
signal_struct variable is created.

Bug was discovered through the occasional failure of telnet(1) to connect.
Signed-off-by: Joe Korty <joe.korty@ccur.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

kernel/fork.c

@@ -733,6 +733,7 @@ static inline int copy_signal(unsigned long clone_flags, struct task_struct * ts
 	sig->group_exit_code = 0;
 	sig->group_exit_task = NULL;
 	sig->group_stop_count = 0;
+	sig->stop_state = 0;
 	sig->curr_target = NULL;
 	init_sigpending(&sig->shared_pending);
 	INIT_LIST_HEAD(&sig->posix_timers);