[PATCH] md: erroneous sizeof use in raid1

This isn't a real bug as the smallest slab-size is 32 bytes but please
apply for consistency.

Found by the Coverity tool.
Signed-off-by: Alexander Nyberg <alexn@dsv.su.se>
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/md/raid1.c

@@ -1346,7 +1346,7 @@ static int raid1_reshape(mddev_t *mddev, int raid_disks)
 		if (conf->mirrors[d].rdev)
 			return -EBUSY;
 
-	newpoolinfo = kmalloc(sizeof(newpoolinfo), GFP_KERNEL);
+	newpoolinfo = kmalloc(sizeof(*newpoolinfo), GFP_KERNEL);
 	if (!newpoolinfo)
 		return -ENOMEM;
 	newpoolinfo->mddev = mddev;