lguest: remove bogus NULL cpu check

If lg isn't NULL, and cpu_id is sane, &lg->cpus[cpu_id] can't be NULL.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---
 drivers/lguest/lguest_user.c |    2 --
 1 file changed, 2 deletions(-)

diff -r d0ea8807cadb drivers/lguest/lguest_user.c
--- a/drivers/lguest/lguest_user.c	Thu Mar 27 11:34:48 2008 +1100
+++ b/drivers/lguest/lguest_user.c	Thu Mar 27 11:35:55 2008 +1100
@@ -251,8 +251,6 @@ static ssize_t write(struct file *file, 
 		if (!lg || (cpu_id >= lg->nr_cpus))
 			return -EINVAL;
 		cpu = &lg->cpus[cpu_id];
-		if (!cpu)
-			return -EINVAL;
 
 		/* Once the Guest is dead, you can only read() why it died. */
 		if (lg->dead)