Fix compile warnings due to missing removal of a 'ret' variable

Commit a8adbe3 forgot to remove the return variable, kill it.

drivers/block/loop.c: In function 'lo_splice_actor':
drivers/block/loop.c:398: warning: unused variable 'ret'
[...]
fs/nfsd/vfs.c: In function 'nfsd_splice_actor':
fs/nfsd/vfs.c:848: warning: unused variable 'ret'

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

drivers/block/loop.c

@@ -395,7 +395,7 @@ lo_splice_actor(struct pipe_inode_info *pipe, struct pipe_buffer *buf,
 	struct loop_device *lo = p->lo;
 	struct page *page = buf->page;
 	sector_t IV;
-	int size, ret;
+	int size;
 
 	IV = ((sector_t) page->index << (PAGE_CACHE_SHIFT - 9)) +
 							(buf->offset >> 9);

fs/nfsd/vfs.c

@@ -845,7 +845,6 @@ nfsd_splice_actor(struct pipe_inode_info *pipe, struct pipe_buffer *buf,
 	struct page **pp = rqstp->rq_respages + rqstp->rq_resused;
 	struct page *page = buf->page;
 	size_t size;
-	int ret;
 
 	size = sd->len;