Remove even more unneeded variable assignments.

kern_time.c:
- Unused variable `p'.

kern_thr.c:
- Variable `error' is always caught immediately, so no reason to
  initialize it. There is no way that error != 0 at the end of
  create_thread().

kern_sig.c:
- Unused variable `code'.

kern_synch.c:
- `rval' is always assigned in all different cases.

kern_rwlock.c:
- `v' is always overwritten with RW_UNLOCKED further on.

kern_malloc.c:
- `size' is always initialized with the proper value before being used.

kern_exit.c:
- `error' is always caught and returned immediately. abort2() never
  returns a non-zero value.

kern_exec.c:
- `len' is always assigned inside the if-statement right below it.

tty_info.c:
- `td' is always overwritten by FOREACH_THREAD_IN_PROC().

Found by:	LLVM's scan-build

1 files changed, 0 insertions, 1 deletions

diff --git a/sys/kern/tty_info.c b/sys/kern/tty_info.c
index b9d9c1a..d5885b9 100644
--- a/sys/kern/tty_info.c
+++ b/sys/kern/tty_info.c
@@ -261,7 +261,6 @@ tty_info(struct tty *tp)
 
 	PROC_LOCK(pick);
 	picktd = NULL;
-	td = FIRST_THREAD_IN_PROC(pick);
 	FOREACH_THREAD_IN_PROC(pick, td)
 		if (thread_compare(picktd, td))
 			picktd = td;