NFSv4.1: Use kcalloc() to allocate zeroed arrays instead of kzalloc()

Don't circumvent the array size checks.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c
index e7aee56..2e45fd9 100644
--- a/fs/nfs/nfs4filelayout.c
+++ b/fs/nfs/nfs4filelayout.c
@@ -750,7 +750,7 @@
 		goto out_err;
 
 	if (fl->num_fh > 0) {
-		fl->fh_array = kzalloc(fl->num_fh * sizeof(struct nfs_fh *),
+		fl->fh_array = kcalloc(fl->num_fh, sizeof(fl->fh_array[0]),
 				       gfp_flags);
 		if (!fl->fh_array)
 			goto out_err;